Tripod, which Scott and I both use, offers both free and paid web sites. The free ones have ads. You can choose between pop-up or the stationary one at the top. I choose the stationary one.
I may have to start paying for more bandwidth if I can't' figure out out to do mine a little differently. Seems the combination of a several MP3s and a lot of traffic exceeds the bandwidth allocation and shuts the site down for an hour or two.
By paying $5.00 a month you can be free of all ads and get more space and bandwidth.
I've never experienced the ad problem on Scott's page though.
Don