FandomsAreLife is a Polyvore account founded almost a year ago by Sarah, the founder and old owner. Due to personal reasons, she gave the account to Hannah and Angela and they have been running it ever since.
They post tips, bounds, Polyvore icons, wallpapers, art sets, and take requests for many different things. Auditions are typically almost always open.
They have a semi-montly fandom, where they pick a fandom and make sets (Polyvore equivalent of blog post) based specifically around it (except for requests, which are filled all the time). On Fridays, they have FFF, which stands for Free Fandom Friday where members can post for whatever fandoms they like.