Has Rockstar been building hype for GTA4 via viral marketing since March 11?
Its quite possible, and the guys over at GTAforums have been having quite the interesting conversation with some bloke named "Deepthroatgta4", which was brought to our attention by Sanshiro, a member of our forums. While we clearly put this under the "high hopes and speculation file" there are a few things that point to this guy being the real deal. You can find everything that this supposed marked man knows by visiting this link.
In addition, you may want to read this article on the subject written 360.advancedmn.com
For all the latest speculation and revelations you can always use our forums.