Usernamecheck is a free web service that checks the availability of your desired user name across more than 60+ sites (webmail services, social networking, video and music sharing, etc).

Vertor is a torrent listings site with a simple premise: only display torrents that are checked to be free of viruses and malware and have been verified to contain the content that they claim. Offers media “previews” on the site such as 20-seconds snippets from audio files and thumbnails from videos.

Evri is a web service that indexes parts of the internet, reads and linguistically “understands” it and discovers connections between entities based on the activity of texts and articles. It then allows you to browse information within the dynamically built (and constantly changing) structure of interconnected entities that it finds.