From daily_snitch
Titling is hard ... but I see it as common courtesy. If a writer can't even be bothered to come up with a title in my experience they didn't put a lot off effort in it anyway. And seeing how many WIP's I am reading (and I am sure I'm not the only one) I'd get to confused if I would read untitled ones as well. If a title is lame or really cool doesn't affect me most of the times - if a title seems seriously inane, I won't read (but can't think of an example here).
As for my own fics - most of my titles would fall into the "lame" category I think.