I just did that. I got a few sentences into a post and decided that it really didn’t answer the question or contribute anything terribly useful.
Every now and again. Sometimes once I’ve actually typed out my comments and I sit back and read them, I realise that they’re not terribly informative.
Nope. Not ever. Not me. I always reckon my crap is worthwhile to post.
What? 
Quite a bit. I often decide I’m not contributing to the content of the thread, I’m merely repeating what others have said, I’m not as funny as I previously thought I was, I can’t get the words from my head to the page properly… etc.
Sometimes. More often when it’s someone looking for advice than just soliciting opinions or trivia. Usually I realize that I’ve gone off on an irrelevant tangent, said what everyone else is saying, or find that what I thought was an original point of view really didn’t work out as well as I’d hoped.
When starting new threads, though, I abort about twice as many as I post.
Sometimes, but I usually reach that conclusion after I’ve posted.
I was going to post a reply to this thread, but I decided it wasn’t worth it. 
I do it pretty often; I’ve typed out whole long posts, and then re-read and thought “Naaahhh…”.
very often.
I tend to type out long replies and then think, “I don’t think anyone really wants to read all that” and then can’t figure out how to say all I want and make it short.
I can never quite get my words right. I read my posts and they all seem flat, and often slightly confused. I can’t see how anyone posts more than a paragraph at a time, it’s exhausting. And as for being funny, eeesh, not a chance.
Despite my post count – at least once a day.
I was going to post my usual enlightening stuff :eek: , but then I realised it had all been said already…
Yeah, I have an internal voice that says, “Do you really want to send that??”
Sometimes, I don’t listen, and get into hot water. But most times, I do. Happens once in a while.
Very often. I almost didn’t bother replying here, honestly.
Quite often. Usually for threads where people are listing stories or personal anecdotes in response to the OP. I end up thinking that a) no one really cares what my particular story is or, more likely, b) **I ** don’t care if anyone reads it.
I’m not a real chatty guy and much of the time I end up thinking “Why am I taking the time to frame this and type it out when I couldn’t care less if anyone reads it?”
Often. Probably once a day. As I’m typing a reply, I’ll get one of several feelings: that I don’t really care about what I’m typing, that no one else will care even if I do, or that I’m incapable of clearly and concisely expressing my thoughts. I hit the back button at that point.
About once or twice a week I will abort a post I am drafting. Usually such posts would contribute little to the thread, either repeating something that has already been said, or would be something that’s supposed to be funny but has long since lost its humorous appeal (e.g. blurting out “BAND NAME!” when someone constructs a scatological pairing of two otherwise incongruent words.)
On average, a few times a day for me. Either I cannot word it correctly or on preview the question has been answered better than I can answer it.
Jim
Most of the time. It never seems to be especially important or funny. 
Ice Wolf, I have an internal voice too - it usually tells me, “You’re an idiot”. So I very often just delete what I’ve typed, hit the back arrow, and keep on reading.
This has happened to me more than once, and I posted anyway.
Now, when I find a thread that seems interesting, but with a lot of posts, I bookmark it until I have time to read it. Most often, somebody else has said what I would have said.
And this pisses me off, because often I start a thread and nobody has anything to offer but the most obvious, when what I’d really like is a new perspective.
Very rarely are my posts worth the effort–I just post them anyway so I can jump back in when something new comes up. Most threads that go beyond two pages are usually just two or three members going at it tit for tat.
What did Ben Franklin say? Something like “Talk softly, and…” I forget the rest