Six Apart, the blogging software and services company, announced the availability of Movable Type 4.2 and with it the debut of Movable Type Pro (MT Pro), a product that combines Movable Type's advanced blogging tools and content management system with social networking features. Now any website or blog owner can create a social network by letting their readers and visitors become members of their sites, with profiles and the ability to rate content and follow each other. Site owners can build community blogs, in which members create their own posts, or forums. The release of Movable Type 4.2 introduces improvements to the Movable Type platform including enhanced performance, simplified default templates, and a free open source antispam product. In addition, improved search and threaded commenting are included in the release.