SAN FRANCISCO — We caught up with Charlene Li earlier today at the Web 2.0 Expo show.  Charlene is one of the most respected visionaries in social media. 

She shares the basics in how to build the impact for online video.

She says while online video is a powerful new medium, its exacting metrics is "a curse.'  She explains that  video is "infinitely measurable" as compared to broadcast television. 

She adds that while online video is gaining traction, it won't reach the impact of conventional television for "a decade."

More coverage of conference by Dean Takahashi on Venture Beat.

— Andy Plesser, Executive Producer