Will this scenario work?

Hello all,

Just started playing with this great lil app and have been fairly impressed with the features. However, I was wondering if anyone has tweaked it at all to "autotag" their mp3 collections using tag data already present, queried against the various web sources.
For instance, alot of my mp3s have the artist and title, but no genre, album, year etc. and I'd like these two fields to be used to fetch the rest of the tag information from a web source. I could see how just a track title would give ambiguous results but you'd think that the artist and title would be able to produce the rest of the info. I've tried connecting the the web sources, but the results were pretty spotty, regardless of how much tag info was already populated. What am I doing wrong? Whats the best methods to clean up your collection?