I need to find a reliable and free video sharing service that will allow our site's members to upload showreels in order to embed them on our site. High quality would be a bonus.
Depending on what you're trying to do, I might suggest viddyou.com. Shoot me an email with some details on your project (address is in my profile). Otherwise, vimeo.com, viddler.com & blip.tv are good choices as well.
I found Revver to reproduce in higher quality than YouTube or Google video. Not all Revver videos get approved, and non-intrusive text ads are placed at the end.