Another vote for Czarcasm. I’ve always loved that one.
I’ve googled for Qadqop the Mercotan, and I can’t find out what that’s about. More than half the links are referring to our own clubmate here. The rest are vague. Explanations?
Earl Snake-Hips Tucker
Cardinal Upon googling Qadqop I came up with
… or Vishnu only to find, upon our death, that none of these exist and we instead
find ourselves owing our continued existence to Qadgop the Mercotan,
This was a description of a link that turned out to lead to nowhere. Hope this clears everything up…
Qadqop the Mercotan Sounds a little Pratchett-esque to me. He gets my vote, by the way.
I like I love me , Vol. I because it wasn’t obvious , to me , at least , that it was a palindrome.
imthecowgodmoo, has always been my favorite.
Blinking duck, who is no more, was always an excellent visual.
As for current names, Warm buttered toast is so simplistic and perfect, it makes me jealous and hungry at the same time.
Atomic Badger Racing is so catchy it should have a ™ after it.
Quasimodem gets points for creativity.
There are a few others that are escaping my feeble brain box right now.
I second whuckfistle and owlofcreamcheese as some of my favorites.
There’s also someone here who goes by 1010011010. Convert to decimal to see the signifiance.
«Ðëëp¤F®ïêd»™ gets my vote for greatest use of ASCII characters not found on a standard keyboard.
While we’re discussing usernames, whatever happened to raisinbread? He/she always posted in purple like this.
Someone called eirself descartes before the horse? Dammit, I thought of that pun 25 years ago. I’ll sue! I’ll sue!
ahem
Blast. Can’t think of anything that hasn’t been mentioned. So I’ll slink off with the question, Are the children of czarcasm czardines?
Did somebody spike the hamsters’ water bottle today??
I like vivalostwages.
I second the vote for Enola Straight and wonder whether he/she is related to Ebola Gay.
Woo hoo!
My favorites are Qadgop the Mercotan and ImtheCowGodMoo. I also have a special place for the Grapist.
As far as gimmicky trolls go, The Grapist was good. His dismissal was classic (booted for “random acts of violets”). I hadn’t seen Atomic Badger Racing before this thread, but that man/woman/badger gets my vote.
I’ve said it before, it’s the name of the title character in the novel Qadgop the Mercotan, by Sybly Whyte.
There is more that could be said about the story, and a number of diligent dopers know the backstory, but I’ll say no more here, other than it pre-dates Pratchett.
I’ve always loved look!ninjas. I think it’s the lack of capitalisation and the fact that ninjas doesn’t also get a !. It seriously makes me giggle every time I see it.
SanguineSpider as well. It’s just… well, a nice username.
I like most (if not all) of the names that have been mentioned. The names here me wish I had gone the funny or pretty username route instead of the simple route when choosing my own. 
Some of the most genius names I’ve ever seen.
(Off topic note spawned by the mention of running with scissors - there used to be a poster on a Pokémon message board I visit named Don’t Run With Scizors, with Scizor being a Pokémon’s name. That always made me giggle too.)
Kid Czarcasm is rolling on the floor laughing his guts out, and says that if he ever changes his name, it’ll be to Czardine.
Good. Because that was all intentional, of course. That was what I meant to do, when I did… what I did… with the… thingy… But my name didn’t get screwed up because I didn’t know the Straight Dope actually allowed capitalization and punctuation. Not at all. Deliberate. Purely deliberate.
ArrMatey and Obsidian Flutterby
Ooh, I also love MrTuffPaws. I think I will name my next adopted cat MrTuffPaws!
Nobody remenmbers The Mighty Tiki God?
GREAT THREAD! Okay, I have more than a few…in no particular order…
Shirley Ujest Czarcasm Gadfly Lobsang HorseFlesh
SatisfyingAndyLicious Mangetout LifeOnWry
WhuckFistle ObsidianFlutterby JohnBckWld VivaLostWages
I’ve seen so many that make me crack up out load - - I’ve scared my kitty cat! LOL! Extremely witty folk you dopers are!
I’ve never seen PhuQanGNyus or HolyShitILikePie before - but those made me LOL too!
Deep Fried? That’s the name? I’ve had my computer set to Cyrillic characters all this time and whenever I see a post from this person, the username is gibberish! I only changed it back to see what it read. Thanks for the motivation. Now, I’ll be too lazy to switch it all back. Or, maybe not.