How to make money on online social networks

I was giving this presentation on the topic "How to make money on online social networks". The presentation contains some of my standard slides about web 2.0, but I have specifically for this presentation added five revenue models for online social networks:

1. The media model
2. The freemium model
3. The app model
- App-vertising
- App as revenue source
- Adds in apps
4. The Golf club model
5. The Intranet model

See the presentation here:

How to make money on online social networks