All Web 2.0

Facebook

Facebook is a popular, free-access social networking website that is operated and privately owned by Facebook, Inc. Users can join networks organized by city, workplace, school, and region to connect and interact with other people. People can also add friends and send them messages, and update their personal profile to notify friends about themselves. The website's name refers to the paper facebooks depicting members of a campus community that some US colleges and preparatory schools give to inc...

Twitter

Twitter is a free social networking and micro-blogging service that allows its users to send and read other users' updates (otherwise known as tweets), which are text-based posts of up to 140 characters in length. Updates are displayed on the user's profile page and delivered to other users who have signed up to receive them. The sender can restrict delivery to those in his circle of friends (delivery to everyone being the default). Users can receive updates via the Twitter website, SMS, RSS, or...

Google search

Google search is a Web search engine owned by Google, Inc., and is the most used search engine on the Web. Google receives several hundred million queries each day through its various services. Google search was originally developed by Larry Page and Sergey Brin in 1997. PageRank Google's algorithm uses a patented system called PageRank to help rank web pages that match a given search string. The PageRank algorithm computes a recursive score for web pages, based on the weighted sum of ...

Exalead

Exalead is a French search engine involved in the Quaero project. Exalead provides thumbnail previews of the target pages along with the results, and allows advanced refining on the results page (language, geographic location, file type, categories) but also further data refinement, such as rich content (audio, video, RSS) and related terms, allowing users to browse the web by serendipity. The company is a société anonyme based in Paris and founded in 2000 by François Bourdoncle. Its ...

Cuil

Cuil is a search engine that organizes web pages by content and displays relatively long entries along with thumbnail pictures for many results. It claims to have a larger index than any other search engine, with about 120 billion web pages. It went live on July 28, 2008. Cuil's privacy policy, unlike that of other search engines, says it does not store users’ search activity or IP addresses Cuil is managed and developed largely by former employees of Google: Anna Patterson, Russell Power...