As I said in another thread, Yahoo! is trying to get team beat writers without the expenditure of having a Mark Gonzalez type guy doing it full time. They've allowed a lot of people to try it out on a provisional basis, but my impression so far is that most have not been allowed to proceed to a more permanent gig. They have some wonderful writers across all sports -- their LA Lakers writer won a $1500 bonus for writer of the year last year, and that does not include just sports.
I write about more than the White Sox on there because I'm actually a freelance writer, but you can tell a few folks have joined just because they wanted to BS about their favorite team. It shows through in their writing.