your videos will get banned evetually if they are just pics with a watermark or a annotatoin advertising your product. enough people will flag it or someone from youtube will delte it for inappropriate content. but with that many views it will do it 's job. there are tons and tons of people doing simple gateways with cpa offers, or pinball/zango netowrk toolbar downloads, etc etc. i have been doing similar things with clickbank pc tv products but using real videos seems to keep the videos up longer. seem to average about 1 sale per 5 videos a day or so. check out the high gravity satelite to pc offer.
hope this helps.
mattj