"To insult someone electronically, or otherwise. Sometimes to be a group insult."
Flaim is often what happens when you mix "flame" and someone in a hurry, or someone who doesnt know how to spell (see also: AOL User). Often used in First person Shooters and online games, where there is often either not enough time to type coherently, or alot of sarcasm and rage, inviting slang usage.
Flaim has also become an internetism much like 'teh' and 'zomg', where it is intentionally misspelt to parody people who are incapable/unwilling to spell properly.
"zomg yuo g0t flaimed".