This subject does keep coming up.
Are people that bothered about finding another site? I know AW is not perfect and is driven by SPs interests and (mainly) profit for the owners but I would not want to spend time looking over loads of sites. It is handy to have one main point of reference and once you get used to AW you can use it effectively to keep an eye on the areas that you want to.
The main issue, unreliability of feedback and reviews, is dealt with by UKP - for me using the sites together is pretty dam good and keeps me busy with a nice balance of regulars and the occasional foray off to see a new girl.