Calgary's gem shines at Silicon Valley

I had uploaded this BBC story earlier to NewsTrust and did a review of it mayself. This is about three guys from Calgary who developed what Business 2 mag said is the best social site in the net. It started as a simple idea: Google had almost solved "search", how about discovery? StmbleUpon came into being with over 2 million members to date!
Here's the BBC link:

http://news.bbc.co.uk/2/hi/technology/6506055.stm