The Like button lets a user share your content with friends on Facebook. When the user clicks the Like button on your site, a story appears in the user's friends' News Feed with a link back to your website. When your Web page represents a real-world entity, things like movies, sports teams, celebrities, and restaurants, use the Open Graph protocol to specify information about the entity. If you include Open Graph tags on your Web page, your page becomes equivalent to a Facebook page. This means when a user clicks a Like button on your page, a connection is made between your page and the user. Your page will appear in the "Likes and Interests" section of the user's profile, and you have the ability to publish updates to the user. Your page will show up in same places that Facebook pages show up around the site (e.g. search), and you can target ads to people who like your content.
"Sprout is the quick and easy way for anyone to build, publish, and manage widgets, mini-sites, mashups, banners and more." H. Rheingold testet Sprout Builder gerade für Unterrichtswidget; funktioniert zusammen mit Seesmic.
Blogbar is a free search engine widget you can simply include in your own blog or website. With Blogbar, you'll allow your web visitors to - search within your blog/website, - search the web with the major search engines, - search the blogosphere wi
AB5k lets you run little mini programs on your computer desktop. They do lots of cool things and hide away until you need them. Things like show the time, check the weather, search for wikipedia articles, and even play games.