Basically, don't be disrespectful. People post their work here to get intelligent feedback, not "OMG u r teh suck noob." Even if a story or idea does suck, be supportive. Help the author make it not suck.
That's pretty much it.
Apparently, these are now called "Eli Rules". Remember, whatever happens, insult the work, not the person.
Also, try to avoid double posting unless you want to draw attention to something no one has replied to.
If you need help, feel free to ask/PM one of the current admins:
BeatMoraleImprove
BobTheFerret
extradimensionalcephalopod
herrdoktor