The main idea of Infotention is filtering information. Generally, these filters are powered by computers. There have been two main types of filtering identified. First, Content Based filtering compares the preferences of the user and the content of the items to get the most proficient answer. Secondly, Collaborative Based Filtering bases off of the preference of other people who have looked for the same items. Some websites, such as netvibes and twitter, allow people to create lists that allow them to see only what they want.