What is the advantage of using 51Degrees.Mobi foundation library along with WURFL project database?
The response from ASP.NET web page is modified to suit a mobile device.
It automatically caches the web pages specific for mobile devices to improve performance.
It comes with a set of scripts to check mobile readiness of web pages.
It gives more accurate / enhanced information in Request.Browser object than is available by default in ASP.NET 4.0.