Well, I'm not that fond of Ashanti. She's a very pretty girl, but I don't think she sings all that well and I would rate her album generic at best.
HOWEVER...
When you really think about it, what female solo artists have been making moves this year? As far as SOLO artists, there have really just been a lot of new faces... vets like Brandy, Monica, Jill, etc. were kinda quiet until very recently so that left room for the newcomers (Ashanti, Amerie, Sharissa...). When you really think about it, the biz is male-dominated, and most females seem to be associated with groups. I agree that Angie Stone or Alicia Keys would be more worthy - but you have to consider that the pool of nominees isn't really all that big if you're just talking about THIS YEAR.
All that said, I did sign the petition.