I Just renewed My Membership a couple of weeks ago, when I saw that it was expiring at the end of the month.
While I did think a bit about whether or not to renew, looking at what I've been buying recently I decided to do so.
For the books I buy, (Which I DeDRM Immidiately for backup) Fictionwise usually has the better prices. BoB only had 2 out of 30 which were significant discounts, so I've pretty much stopped checking there for books which are more the $10-$12.
Its doubly handy as the iPhone eReader and Stanza Apps are great, so I can usually buy and be reading the book in Minutes. As I've not had my Gen3 for a couple of months and am waithing for my Pocket Pro, ease of use on the iphone is really handy as thats been my primary reader for that time period.
One of the advantages for me is that Most of my ebooks are in one library, so I an avoid rebuying

the same book again if I forget I've already got it. (Something that has happened all to often in my pBook collection)
The lack of more promotions (2008 had a Bumper Load) is a bit disappointing, but it does meant that I'm less likely to completely blow my Budget (On Books at least)