How about I explain what mine does? copy/paste
Every website that calls itself Web2.0 gives it’s users a feed of the content and actions they perform. These feeds give users the opportunity to leverage their creations, and use their data in new ways. Sites like Friendfeed let you combine your feeds in one place so your friends can easily read them. This is called Lifestreaming. As more and more users create more and more content, these sites quickly become overwhelming, and trying to keep up is like trying to drink from a firehose. My site is also a Lifestreaming application in that it makes it easy to for users to aggregate every feed they create on any site, not just a handful of select services like some Lifestreaming sites. But more importantly it actually does something more than aggregate them. Using text-mining techniques, and machine learning algorithms my site learns about users from the feeds they add to their streams. Given the stories you share on Google Reader, or the things you write about on your blog, it learns what you are interested in so that it can show you people who are similar to you and the things that they are into that you haven’t seen yet. This data is called attention data, and in the spirit of the open data that we use to infer the users’s interests, we also export this data in the APML and OpenTaste formats. This data can be used by other sites that can read it to show the user more interesting content. But that kind of information shouldn’t be available to everyone, so users will be given complete control over which sites have access to their attention data. Most users won’t care about that right away, but what they will like is that we let them customize the colors and fonts that their content gets displayed in, just like their MySpace profile. It’s their content, it should reflect their style. They will be able to add backgrounds and borders and no matter who views their content, whether it’s their friends or just someone who likes the same things they do, it will have their unique look and feel. It’s Lifestreaming that does more than put everything you do online in one place; it helps you find things that are interesting; lets you create something useful; something that’s yours. It’s your content, make something cool with it!