It seems every day there is a new video hosting site, video blog, video social network, or cool video tool popping up on the web. It's tough to keep up! So, to help you (and me) I thought it would be nice to put together a list of some great video sites that I find useful. Here are 20 of my favorite video sites. (Know of others? Please post them in the comments!) Viddler - publish and watch videos. Great inline commenting feature! Blip.tv - Publish your video blogs. Very nice simple player interface. Veoh - video publishing, TV shows, and more! Kickapps - Create your own online community. Great tools for sharing video, blogs, photos, audio, a forum, and more. Ning - Create your own social network using video and more! ooVoo - Video conferencing for up to six people. Skype - Video chat for free with anyone, anywhere. Seesmic - newly launched video commenting system would make a great addition to blogs. Revver - Publish your videos, and collect a share of the advertising revenue. Metacafe - Video entertainment site. Loads of stuff. Tube Mogul - Upload your video once, add meta data and tags... and publish to multiple sites automatically. Plus great tracking tools! Screen Flow - Record your ...