Pipes really does allow you to "aggregate, manipulate, and mashup" the web. This tool is so powerful its hard to even begin scratching the surface. Create aggregated rss feeds for... goods or housing in your area, news from around the web, price alerts from auction sites, and anything else you can think of! If you ever wanted to dabble in programming, but didn't want the code thing to get in the way, here's your chance.

From the site:

- create and layout a web page with any content, using the web browser. No downloads.

- share your new web page and let others add their own content to it.

- form groups with other users to privately collect and collaborate on your web pages.

From the site:

Animoto is a web application that, with the click of a button, produces videos using images and music that a user selects. Using their patent-pending Artificial Intelligence developed to think like an actual editor & director, the resulting video has the emotional impact of a movie trailer and the visual energy of a music video.

From the site:

Screencast-O-Matic is the free and easy way to create a video recording of your screen (aka screencast) and upload it for free hosting all from your browser with no install!