It appears that today is the day the Transformers: Revenge of the Fallen marketing campaign begins its kick off as the various viral campaign websites have updates to join the TV spots showing up on TV.
First seen in the trailer on Sam's jacket as he talks to Simmons, the site run by "Leo Spitz" (Ramon Rodriguez) now has a home page and blog, complete with mission statement. The primary goal is to determine the "real" story behind the events in Mission City (from the first movie). There are a ton of posts already on the site, going back to June 10th of last year (about the time TF2 production started). Of note is Leo has a bit of a crush on the lovely Olivia Munn who is referred to as "Future Mrs. Spitz" in the tags. Other than a not so minor crush on her, the rest of the posts are filled with UFO sightings and aliens.
Update: A few links of note from Leo's site. One is an amusing "LeoPonceDeLeonSpitz Venture" of Real Effing Kitten Calendars from one of the advertisements (found by NHLfan). Another is "Mission City" updates of blurry images of Starscream and Optimus (found by Katie).
This site was discovered through the adult novelization of the movie and is in direct competition with the above. Run by "Robo-Warrior" aka Simmons (John Turturro), he frequently comments on his dislike of Spitz's site, shares his love of The Munn, and enjoys Star Trek. The posts in this case start on September 8th, 2008 and do not come with as much frequency. I am assuming that will change now that the viral campaign has kicked off.
Another site, not yet up and running. This is the company that plays a part in the cover story for the events of mission city and likely the company that would want to use Transformers tech to their advantage. What part they do or do not have in the current movie is unknown.
Thanks to Katie and p00p m0nsta for the links.