Facebook app for iPhone (243,482 daily active users, 45%). Big implications for ad networks?

 In another example of how mobile-app-can-wreak-havoc-with-your-business-model, check the usage statistics of Facebook For iPhone.
There are 243,482 daily active users representing 45% of total. These are high numbers. It's fair to say that 243,482 iPhone owners are now using Facebook for their social networking experience.
Now compare the use % for applications which are higher [...]