When I tried to go to their support page, or their home page, nothing's there. Not a good sign. Startfree does not track the sites you visit but instead bases their ads on your answer to a monthly survey. 3 e-mail is available. The little banner doesn't bother me at all, a small price for their reliable service.
Ad banner is large.
Connection speed, though, is better than most. So far, no problems. Will keep as a backup to WebFlyerNet, due to WebFlyerNet's much less intrusive advertising format. Best I've tried. If they have access numbers in your area, be sure to try it.