That's a tough call. On one hand, it's just another link...whatever it goes to isn't actually on your site. It very much does become another sponsor link.
On the other hand, at least when that link goes to a sponsor site...there is at least some modicum of control. Sponsors get called out and blasted when they do something incredibly stupid. Having that link go to Joe Schmoes page...that Joe can do whatever his lilttle mind dreams up...that could get ugly.
Then again, I've seen link sites closed down and replaced with some pretty nasty things...I'm sure there are recips out there to some of those.
See, told ya it's a tough call
Frankly, when you get to the short strokes...I don't think the management and hassle would be worth it. To keep your own butt protected, you'd almost have to monitor those links yourself.
To answer your question...yea, I'd probably accept the sites for a regular submitter and I'd test those links just like I do any others. That's where the rub comes in...if the person you sold that link to has something nasty on there...it's your butt on the line
