It's no big secret that Mobile 2.0 is ready to take off. Smartphones and PDAs are becoming powerful little computers that we carry in our pocket, and with browsers like Skyfire in development, more attention is being focused on bringing a rich Internet experience to the mobile phone.

So just how much money is the mobile web going to be bringing in? Juniper Research estimates that mobile revenues will reach $22.4 billion by 2013. That's quite a jump from the $5.5 billion in revenues the mobile web currently rakes in.

Much of this growth is based on mobile social networks which will go from an estimated $1.8 billion in revenues this year to $11.2 billion in 2013.