2. Delicious is a social bookmarking service that allows users to tag, save, manage, and share web pages. On Delicious you can; bookmark any site on the Internet and get to it from anywhere, share bookmarks and get bookmarks in return, and discover the most useful and interesting bookmarks on the web.

3. Google Inc. is an American public corporation, earning revenue from advertising related to its Internet search, e-mail, online mapping, office productivity, social networking, and video sharing services as well as selling advertising-free versions of the same technologies.