The Widget Summit is happening in San Francisco this week and all the major social networking platforms are here. While much of the conversation has focused on widget and application distribution fundamentals, a large portion of the crowd is from larger media companies trying to figure out how they should do content distribution throughout the web.

Sandra Liu Huang from Facebook, Paul Lindner from hi5, Max Engel from MySpace, and David Jones from Friendster are addressing the different opportunities each social platform has for content creators to gain distribution and eyeballs on their respective platforms. Of course, both the technical and market opportunities are quite different on each.

Later today, Joseph Smarr from Plaxo will talk about how companies can “design their web presence as an agnostic data hub, connected to many different widget platforms over time.” These questions should be important to any media company hoping to distribute content across the web.