First, NYTimes.com launched an "alternative" home page, Times Extra. Then it introduced a new celebrity-driven ad campaign. Continuing a busy week, the site has launched Times Widgets in beta. The new online platform that gives users the ability to create customized widgets using the Gray Lady's more than 10,000 RSS feeds. Users can now create customized widgets to embed on their own Web sites, blogs, customizable home pages and social networking pages. Times Widgets can be created from section-specific RSS feeds such as Business, Health and Sports, and from Times Topic pages RSS feeds, such as Barack Obama, India and the Treasury Department.