Worked very well for me, for the following
Bjork
Stone Roses
Massive Attack
I found that the listed bands were also of interest to me, somewhere on the order of 80-90% of the time.
Now, whether or not that proves that I am simply the target market for all those associated bands, or that many others who have frequented that site have taste similar to my own, or nothing - remains to be seen.
Neat site though, thanks for the link.