AOL is second to none.
Gotta agree with Big Tex. My league used AOL's Commissioner service last year. Totally free. Exact same product as Fanball Commissioner, but Fanball charges something like $60. The only difference is the tech support is kind of lame, but you can go on the Fanball website and find most of the info you need. A guy posted on these boards last year about the AOL site, he was the product manager. I e-mailed him directly a few times and he was very responsive.
One other thing - all the extras you have to pay for on Fanball - like their insider stuff, was free on AOL.
The league is fully customizable (just like Fanball Commissioner).
Last year I sent an e-mail to fanball to ask what the difference was between AOL and Fanball, and they responded back saying the real time scoring was better on fanball, as was the tech support. But, our real time scoring worked very well, and was very fast.
One thing people fear with using an aol league is aol spam. I didn't get any.
Edited to add that I'm pretty sure the aol guy's FBG user name was bigalgreek. I did find his aol contact info: "Alex Joannou" <joannouas@aol.com>
I'm sure he can answer any questions.
And NO, I don't work for AOL, I don't use AOL for internet access or for anything besides free fantasy football. I was hesitant at first, but it worked great.