Bicycle Sizing Tips " A must read"

Found this Bicycle Fitting website on a UK Bicycle Shop Site(http://www.twenty3c.co.uk/)

http://bikefitting.com/English/Frame.aspx note:I had to use Internet Explorer as Mozilla wasn't displaying correctly.

Anyone else had this type of fitting done? I think the Specialized version is called Silicion Fitting and slightly different to their BG Fitting Process.