I've been playing with it and it's really pretty cool! You can use it to develop a mobile version of your website right from your desktop. That makes things much easier.
If you want to check it out have a look here.
AJParise wrote: In January 2008, I started working extensivley with the REAPI.After a year of headaches and mindnumbing research I've developed some very handy classes for .NET developers using the 3.5 framework looking to integrate with the REAPI.