I blog about the McRib sandwich everytime it comes back, so it is only natural that you would look here for information about the only boneless pork sandwich in the realm of fastfood. But you should really consider looking at these sites as well:
The promotional site owned by McDonalds: http://www.mcrib.com/
A good wikipedian overview: http://en.wikipedia.org/wiki/McRib
Facts about the McRib with mouth watering pictures: http://www.foodfacts.info/mcrib/
Actually, just Google “McRib”. And then YouTube “McRib”.
This is the thrid, and maybe last, farewell tour. Get one soon!