Inside Facebook

Zynga has hit a new milestone on Facebook, and meanwhile, it has just launched a couple ways to increase its presence on the web: A stand-alone site for its hit game FarmVille and a new browser toolbar for Mafia Wars.

The San Francisco company now has more than 200 million total monthly active users on the site, according to AppData. This measure is slightly deceptive, as we don’t have a way to tell how many of users play more than one Zynga game — some large minority of these users are being counted more than once, especially as Zynga cross-promotes its games.

However, Zynga also currently has around 65 million daily active users, from our understanding. 61.3 million of those are on Facebook, according to AppData, so presumably the others are on its MySpace and iPhone applications.

If Facebook is clearly where Zynga is seeing the most usage, why would it launch a site and a toolbar for its games?

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