there is alot to be said for those "annoying to the surfer" type slow loading tubesites that are strictly sponsor hosted and running on underpowered or overextended servers so that the surfers tend to get so exasperated when trying to watch anything that there is a 50/50 chance they might just click on an ad to get the hell out of there (or just leave for good)
not a great way to set up a site for retention of the surfer or repeat visitors or any kind of surfer to surfer recommendations to your site, and I think some might put them in the same category as splogs when it comes to link trading with too
