Radbox.me is a free service that lets you save videos from popular sites on the web to your personal web page so that you can watch them later.

Unlike Magma and other video aggregators which gather thousands of videos into one website for you to browse or search through, Radbox uses a simple bookmarklet (huh?) that you click when you visit a web page with a video that you want to save. After you register for the service, just drag the bookmarklet to your bookmarks bar and when you click it Radbox will save your videos to your own collection page. Radbox works with popular services such as YouTube, Vimeo, Metacafe, DailyMotion, Blip.tv, and TED. If you find a video that doesn't play inline on your account page, you can view the video on the original site.

Sample Radbox.me collection page: