It doesn't exactly look great on our software that a toolbar is installed alongside it -- especially for a professional business product.
When I see someone's official site being at a place like that, it feels kind of like your office would be in your mom's basement and your business cards were chosen from a template at Kinko's.
More importantly, how do you market your software? Many people go to download sites to browse what's available, so being listed is a form of advertising. If you don't expect a hefty bandwidth bill by offering it directly on your site, why not do both?
It's not our official site but it was a one time a legitimate place to distribute software from. They just killed that of course.