Usability 
Mobile edition of video and audio search engine Blinkx. Blinkx draws from over 750 content sites and claims to have indexed 4000 years of content. The mobile site lets you browse popular Blinkx categories or do a keyword search. Videos on Blink Mobile download rather than stream. They are rather big files at 640x360px and several megabytes in size. The ones I tried looked and played great on an HTC Evo Android phone but only the audio portion worked on a Nokia N95-3. I'm not sure why as they are H264 encoded in an MP4 package which the Nokia should support.