Ning’s co-founder, Marc Andreessen, provided a more in depth look into the new OpenSocial API by way of a screencast demonstrating on how Flixster and iLike, two popular apps on Facebook, exist on Ning.

The screencast shows Flixster and iLike being used on three different and unrelated types of social networks using the Ning platform. The three social networks (tudiabetes, askaninja, dubpages) used in the screencast showed the flexibility of Ning’s platform as well as how the apps blended seamlessly into the different types of niche social networks found on Ning.

An important point coming from the screencast is that the applications won’t go live until the end of the year and possibly early next year. I’m not sure if this is the case for all participating OpenSocial partners, but I’m betting that Orkut will have the applications available before the other partners. Considering Facebook already has over 7000 apps and a six months head start, at this point does it matter which OpenSocial partner will launch the apps first?