Thing #20, YouTube and other such sites

I looked at YouTube, the most popular site for videos that people upload. I also looked at google video which not only is a site for uploading videos, but it also lets you seach for "all videos" on the net. I liked metacafe.com's slide preview option. You don't have to watch the video in order to get an idea what it is about. Metatube says it searches 100 video sharing sites. But mostly I just got results for YouTube.