eBay announced sellers may link to videos in their listings, an announcement that seemed to come out of the blue considering many sellers already include videos in their eBay auctions. eBay also told users they were prohibited from embedding videos in their listings, despite the fact eBay's Solutions Directory lists approved third-party vendors that offer video-embedding services.
Under the new policy, sellers are limited to using five eBay-approved video hosting sites: YouTube, Google, MySpace, Microsoft, or AOL, services selected "for their combination of popularity, ease of use, and the protection they offer against harmful programs being used inside the videos."
The announcement stated that eBay thinks "the time is right to bring the video experience to eBay."
http://www2.ebay.com/aw/core/200704161811502.html