Video search engine VideoSurf launched a Firefox addon today called Videos at a Glance, which can show Twitter users the videos behind applicable links.

For example, if someone in your Twitter stream posts a link to a video, the addon will automatically display the video, as well as a visual video summary, right in the tweet, so you dont have to click through. As Firefox hit 1B downloads last week, the VideoSurf extension brings sophisticated video search technology to what has become one of the most ubiquitous browsers available, a spokesperson for VideoSurf tells WebProNews.Although Twitter has been cracking down on the posting of malicious URLs, they probably cant catch them all, and this could be good for that reason alone. The following video shows how it works.