I have met two dozen or so Dopers in person, so you can ask them what they think, but I think I am pretty much the same in both mediums.
Yer pal,
Satan - Commissioner, The Teeming Minions
TIME ELAPSED SINCE I QUIT SMOKING:
Six months, one day, 14 minutes and 12 seconds.
7360 cigarettes not smoked, saving $920.05.
Extra time with Drain Bead: 3 weeks, 4 days, 13 hours, 20 minutes.
Am I different IRL? In some aspects yeah.
Let me elaborate, basically I am a cheerful and fun dude but, somehow surprisingly to those who know me well, I have an intellectual, serious-stuff-pondering “dark side.” Diametrically opposite personalities are encapsulated within the boundaries of the bodily frame I have being confined to reside in. On one hand I am totally loony, always coming up with crazy, irrelevant stuff (my friends often joke that hadn’t my mom conceived me I would have been invented by the guys from Warner Brothers).
Those are the comparisons you get when you are joking about farts, and babbling pseudo-scientific bullshit just for the sake of laughing at the tremendous amounts of gullibility that govern the non-paradigmatic minds of some folks. Come on, don’t tell me that it isn’t funny when obscure, elegant words start popping out of your mouth in a well structured, seemingly well reasoned fashion, and some people take those assertions as true without even contemplating for a minute the self-evident implausibilities implied by them. Suckers! 
But I am digressing now…
Back on subject, being the biological paradox that I am, I can swiftly shift from the nutty, wacky, nonsense-talking kind of dude to the intellectual persona I yearn to become–if I ever get beyond the genetically imposed intellectual barriers erected by the neurologically-impaired, intelligence-deprived, useless arrangement of atoms that occupies the physical space that should have been more conveniently assigned to what you smart people call a brain.
As of right know I am on the futile process of trying to complete the desired, yet slow acting, metamorphosis into such an intellectual being. Unfortunately, at the pace I am going, I will need the benefit of several lifetimes to get there, specially taking into account the fact that my previous incarnations as Napoleon’ s dog Little Narcissus, Nero’ s cat Fireball, Alexander Borgia’ s cow Lucretia’ s Pussy and Santa Claus’ unknown reindeer My Ass is to Big to Fit on a Chimney–among the notable ones–haven’t been able to significantly contribute to the advancement the very noble cause that is dispelling ignorance…
Anyhow, while IRL my personality exudes a dualism analogous to a certain Robert Louis Stevenson novella, my digital self–at least the fragment of it that roams this particular board–tends to favor the more philosophical, knowledge-searching, intellectual-enlightenment-pursuing side of my personality. Even though the Jekyll side normally gains control while on the SDMB, my reason-obstructed, logic-neglecting Hyde periodically gets a hold of the keyboard. And if you have read a sizeable sample of my posts you might have a slight idea of the monumental amounts of mindless crap that emanates from the aforementioned pathetically unproductive organ of “thought” that is my brain.
So yes, there are a couple of differences between my real and virtual personalities. If you want to experience firsthand why do my friends call me “a psychiatrist’s wet dream” you can come here to Costa Rica and I will gladly invite you to a couple of cold ones. Actually, I don’t consume alcohol–yet I display many of the behavioral traits characteristic of those who do. Who knows? Maybe alcohol is a naturally occurring substance in my blood, thus somehow explaining my odd patterns of behavior…
Anyway, not to worry, you can do the beer drinking and I shall stick with my traditional beverage, the nectar of the Gods, the elixir of life: a cold bottle of coke.
::saliva dripping precociously and abundantly off my mouth as its orgasmic presence is visualized through my mind::
Quasar signs off…and goes to submerge himself in the magical world of carbonated beverages. Au revoir my fellow dopers!
I say the same things in real life as I do here.
But then I never get “in your face” or insult people.
Anyone who does that …
a- has no actual social life. I’m sure none of the heavy pit posters have any day-to-day contact with people they can relate to. That’s why they’re always here and always angry.
b- is kind of pathetic.
Here or in real life. Nobody envies the hot heads.
I am every bit as big a sanctimonious prig in Real Life as I am here, but I have much more difficulty staying on topic. I use the preview button more here and regret saying somewhat fewer things.
In my everyday life, I am quite a bit more hostile than I come across on the boards. Yet, I also have a very dry wit and am usually causing one or more of my coworkers or friends to have a laughing fit because of a sarcastic comment or two. For some reason, my type of humor/personality does not transfer well to this medium so I basically come across as being rather dull and boring here.
I’m also much nicer to people on the boards than I am IRL. I’m not quite sure why that is. My only explanation is that I don’t really get to see people (at least the ones I am nice to) on the boards doing horrible, spiteful, mean things all the time so I see them as nice people all the time. Sort of a suspension of disbelief.
This is not to say that there aren’t people on the boards that I don’t like–there are a few. However, since it is difficult (at least for me) to convey truly angry emotions (rather than just insults) in this medium, I rarely address any of them if I can help it.
And FTR, I was pleasantly surprised when I met Satan that he is very much the same IRL as he is on here! He even sounded like I thought he would!
I’m mostly the same, but for two key differences: (1.) my constant sarcasm is usually more evident IRL (or on record). (2.) my constant slurred speech does not translate to the written word (for which I am grateful).
I’m always me.
I have more attitude IRL. Mostly because I can make the most outrageous claim about myself and laugh. The laughing part is important.
I’m way more sarcastic, but usually with a smile or a twinkle in my eye. It’s hard to transmit that in writing.
I think I’m a bit different IRL than on-line, not strikingly different, but tweaked. I’ll leave it to the two dozen people that have met me IRL to say what they think. (As I haven’t really anylized myself as to how I project myself in the two mediums. I think it’s easier to judge others projections than your own.)
Btw, Satan, IMO you are much the same in person as you are on here. 
What you see is what you get. Sometimes it’s good and sometimes it’s bad. It is all me in various forms.
The only difference would be that IRL people think I am pretty funny whereas my sense of humour doesn’t always translate well into this medium.
LOL Dal_timgar! " dummies can be a pain in the ass. this was 20+ years ago and i don’t bother with dummies in real space. they are easy to ignore on the internet." Man you almost got in a fight because you squashed a guys irrationalism with dry reason! That has me rolling!
I don’t ever say much in groups because generally there are always at least a few stupid people there who will prevent any hope of constructive discussion. I don’t converse at length with most people anymore because…ahem…most people qualify as one of those stupid people.
I think message boards are actually the best medium in existence so far for intelligent group discussion. Though I do enjoy diving in ONE on ONE with an interesting person about life, liberty, and the pursuit of happiness. And I also get amusement occasionally from having to discuss things with irrational dopes, though it usually quickly becomes tiresome.
IRL…if you engage me in serious discussion you will receive the same type of discussion I provide here. Yet, IRL I enjoy simply living, laughing, playing, dancing, reading, and creating as much if not more then discussion. Oh I also eat and stuff more in real life then I do on these boards.
As on these boards, I NEVER yell at people or call them names as a solution to an argument.
ARe you kidding?
In real life, I’m PAINFULLY shy. I cringe and fidget when I’m in a group of people I don’t know, I stammer and I look down a lot.
Basically the same, but I just might come off a leetle bit more intelligent on these boards, believe it or not. IRL, I tend to go “oooh, oooh, oooh” a lot and flap my arms about when I’m trying to think of what I want to say. I do that when I’m typing my messages in here, too, but y’all can’t see it.
I’m the same here as in there…shy, quiet, cute, dry sense of humor…you know.
I think I’m the same.
Haven’t meet anyone from the board
who can tell,
yet…:):):)
In person Silo quieter and not as much of an asshole as he can be online. Don’t know why that is.
Satan is actually almost the exact same online and IRL, though I think he’s a bit easier to talk to IRL. Less arguementative or something.
Evilbeth is actually as smart and funny IRL as she is on the boards. She’s also very nice too, so is her hubby!
Uh huh.
You’ve proved yourself to be more the “asshole” online. Sorry to break the news.
Can I just please, please, please request that you guys (aenea and Silo) not get into it again here? aenea, you threw the first shot at Silo and he was just shooting back. Let’s all hold onto our pride and our dignity and let it drop at this!! Please, please, please! Don’t make me go to the Pit! I don’t much like starting threads there but I’ll do it!
This board has taught me to be more of a diplomat.
You shouldn’t make loud claims when there is Tomandebb ready to cream you with facts.
Be quiet and listen. You might actually learn something.
I don’t understand the question. Do I do what differently? Type? My typing, I’m sorry, keyboarding sucks in real life, too. Is that what you’re asking? Or maybe this is it. I’m actually much busier in my real life, I’ve got too much obsolescence to plan.