I tested it 3 times with:
1. 40 Tygem games
2. 40 KGS games (by entering my userid)
3. 40 IGS games
Of course for IGS and Tygem I used my latest games.
With my tygem games it estimated me as KGS 2k (pretty accurate)
With KGS: 3k (again very accurate)
With my IGS games (at 5k range) it estimated me as 3d (needless to say that's very wrong).
The estimated playing style of all of my games was pretty much the same and very accurate!
The recommended professional players were always different except of two playerse which was shown in 2 of the 3 trys.
As problems it pointed out:
1. Tygem: Sente and Gote
2. KGS: Sente and Gote, Empty triangle, likes to capture stones (the last one is very true

)
3. IGS: Nothing (that's not a surprise as 3d

)
The diagrams at the end don't really tell me much.
Now my thoughts: I really like it! It's a great and interesting idea. I always knew I play territarial but seeing a number on how much (8 in my case) is really interesting.
The other areas of playing style are also very helpful.
The recommedations of professional players that have similar style and whose style is very different is very cool.
I would love to see an offline/downloadable version, of course new information must still be exchange online but that way you won't need to upload all games. And maybe can even use more than 40 games.
Even if that isn't possible, I would still like to see this being improved.
Now here is something I didn't like: It told me that I like to play empty triangles, I would have liked to get a list of the games where I did play it. Without context it's hard to take it seriously.