It's not unheard of for movie announcements to take the form of fake company announcements--pretty sure "I Robot" did this
I don't think so- the company in the film is called 'US Robotics', and there's a real-life computer modem manufacturer called [ame="http://en.wikipedia.org/wiki/US_Robotics"]USRobotics[/ame] (that has, despite the name, never made robots). The movie, having been adapted into an adaption of Asimov's work, takes the name of the robot company from his book series- U.S. Robots and Mechanical Men. It seems highly unlikely that USRobotics was created as viral marketing for I, Robot, since it was founded in 1976.
The Planetary Resources logo bears enough of a resemblence to the RDA Corporation logo that the one could morph into the other over 150 years without too much trouble.
I don't know;
The font is different, the little picture thingy on the side is different... the most similar thing about the two I can see is that they're both a modern-ish style of logo design, and thus look 'fancy'.
Avatar didn't really leave a lot of room for a direct sequel. The blue monkeys kicked the bad humans off the planet, end of story. Any direct sequel would either be a very different kind of movie (Alien vs. Predator vs. Na'vi, anyone?) or just feel like a rehash of the same thing. Thus, a prequel (perhaps set during the early days of space exploration/resource exploitation?) could make sense.
Well, the popular fan opinion of a sequel is that the humans would come back and continue to cause trouble. From an official side, it seems like there's a definite inclination for a sequel, since the current character models are usable and the characters are known to audiences. Besides that, there have been stories of the sequel's potential subject, from other moons in the same system, to exploration of the Pandora moon's oceans, to focusing on a 'master navigator' culture similar to that of the Polynesian people. But perhaps this is just deliberate flip-flopping to distract from the true nature of the future film(s).
But future Avatar films seem to pretty much be a given, I don't think they've officially started making them yet, but the release date for the sequel is somewhere in the 3-6 year range.
According to the official guide to Avatar, the RDA Corporation (the "bad humans" from the first movie) started around this time period:
To be fair though, Planetary Resources is hardly "started in a garage with money from family members". But then again for Cameron to form a start up company it'd obviously be different from group of silicon valley geeks-without-a-cause joining up in a garage.
I don't think everything this guy does revolves around his films. Like with his recent deep sea dives, he's said that he makes films to make money to dive, rather than dive to promote the films. Obviously if something like diving to the bottom of the Mariana trench or starting an asteroid mining company brings him publicity, then it would bring his films more publicity, but perhaps it is just an unintended side-effect.
But for Cameron to form a sort of Ur-RDA would be kinda weird as an advertising campaign, because in the film they're total villains. It'd be something like George Lucas starting a Galactic Empire.
And then of course there are all the other people involved, like Simonyi, who are the kind of people who would put large sums of money into a space-related startup. Are they just there to promote Avatar?