Regator, the blog aggregator that acts like a mix between a standard RSS reader and Digg, has launched in public beta.

We initially covered Regator in July when the site launched in a limited private beta. At the time my biggest concern was the inability to add your own RSS feeds to the site, which restricted you to the approximately 3,000 blogs handpicked by Regator. CEO Scott Lockhart says that the site has been updated to allow users to upload their own feeds, but these won’t be visible to other users until they have been approved by Regator’s editors.

The site has also expanded on its sharing functionality to include Twitter and Facebook, with plans to introduce further integration with social networking sites in the future. There are a number of similar sites that combine news aggregation with social voting, including Socialmedian, which we covered last week.