Tom Foremski:

Mr Valdes-Perez is also a critic of the behavioral technologies that the large search engine companies use to try and improve the search experience by collecting personal data. Clusty.com does not collect any user data which means that there can be no privacy breaches, accidental or subpoenaed.

“Users search based on their whims at the time, and not on past behavior. It is much better to provide a user with several options on what they are searching for and allow them to choose,” he says.