Nothing is more annoying than 11 pages of posts, and nobody helping you. Helpful posts ONLY.
Things like:
"wat he sed!"
"why shud i help u?"
"why dont u build it urself, noob!"
are all bad.
Things like:
"Might wanna change _______"
"I think it's a better idea if _____"
"Does anybody else need help?"
are good.
Also, don't post any "Oh, I got this problem too!" related posts. Just wach the topic and see if anyone helps. If they don't bump it back up.
If you have a problem, search it first to make sure it hasn't already been answered.