[Quarkboy]

I think in the end you (we) just need to be paitient. There is clearly a need for a decent web-database of scanlated manga, with genre/user rating/edited reviews and links to scalator groups. With the growth in popularity scalated manga is going to get from the recent anime shows like Midori no Hibi and Tenjou Tenge is going to cause, I would be surprised if someplace doesn't pop up that fullfills this need.
It's a difficult job, however, and would probably be best implemented as a new function of one of the well established manga sites.

As a stop gap, however, I wonder if there is a lively forum discussion somewhere, much like animesuki's fansubs forum? I know that I get a decent idea of what's good and what's not by looking there; is there any decent forum for manga?