The user hfastedge has on his page an ad for some kind of service he's offering...
We do have a policy here that user pages don't have all the same rules as encyclopedia pages, and we generally have let people get away with just about anything, but I don't think we've ever discussed ads in particular. I don't personally have much problem with it. It's been understood that user pages are kind of personal space and not subject to Wikipedia policy except for copyright violations and outright obscenity. If a user wants to hype a business, I don't think that's too out of line.