Qik is one of may video streaming services that smartphone users can currently choose from, but Qik's Silicon Valley approach, ensuring the service is used and covered by prominent bloggers in the technology areas may be one reason why it's gained such a significant footing compared to Bambuser (for example).
Andreessen, the man behind web browsers Mosaic and Netscape is certainly a highly visible member of Silicon Valley, but has also invested in a number of start-ups at an early stage, including social news site Digg, status messaging community Twitter, and the social network platform Ning. His involvement in mobile media in general, and Qik in particular, should come as no surprise.