Regator, which is released in private beta, is a new blog aggregator. The site gives users an easy way to browse RSS feeds and to vote on the most popular stories while keeping the layout of more traditional RSS aggregators. Regator offers an audio and video search across its indexed blogs, but the results aren’t always appropriate - a video search for “Yahoo” yielded a YouTube trailer for the movie Wanted as the second highest hit.
You can't import your own OPML files or subscribe to blogs from outside of Regator. While this is clearly meant to keep things simple for Regator's user base, it does limit its usefulness for more advanced users. You can, however, nominate your favorite blogs to be added to Regator's catalog.