TimeTube is one of those rare YouTube mashups that make the video-sharing site both fun and functional. Type in a search term, and TimeTube lines up the results on an easily-navigated timeline, letting you trip down memory lane or learn more about a topic as it progresses through the social media jungle. There are alternate views—a list, a flipbook, and geo-located—but the timeline view is what really sells this mashup. Got another tool that stramlines and organises YouTube searches? Let's hear about it in the comments.

YouTube search webapp TimeTube creates a timeline of video clips for a certain search. Search for something (like "American Idol") and you'll get back a timeline (or "tubeline") of video clips. Pan, zoom and watch the clips right on page. Fun way to catch up on old clips of interest you haven't seen in years.

Create or browse interactive timelines with webapp Dipity. The service can create any sort of timeline you want, but it really shines when creating a personal timeline; that's because Dipity integrates with tonnes of popular webapps, like Flickr, Twitter, Last.fm, or any RSS feed, so that all you have to do is provide Dipity with a few usernames or URLs and it'll automatically build your beginning timeline for you. After items are added, click on any item on your timeline or zoom in for a closer look. If you're using it in the personal timeline manner, Dipity is essentially another lifestreaming app along the lines of previously mentioned FriendFeed—it just has a different way of presenting your stream. Dipity also supports manually creating timelines on any subject, but if you want total control over your timeline, check out how to roll your own hosted timeline.