I'd say 4-7 months is very very good for current times...there are so many sites now and people don't stick around as long as they used to back in the 90s
Really depends how much community-oriented stuff your site has to keep people coming back...you can expect sites that only try for the quick conversions but have nothing sticky after the member pays to not retain very long at all....another clue could be sites who don't offer a Revshare plan
Edit: yes forgot to say, our IwantU.com retention is currently 3-4 months indeed...however we are increasing it bit by bit every week
