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It's a nicely done faux web site, looking just like a typical boring corporate site -- descriptions of the company, its executives, their areas of business, press releases, and so on. A bit of site exploration reveals a video of one of the company's scientists talking about their work with the human genome, and how"...with a flick of the wrist we can adjust character... change personality". Hmm.... A click on the movie opens a web page on the main Manchurian Candidate site, providing the promotional payoff for the site.
There would appear to be other things going on within the site; in particular, there is a "limited partners extranet", suggesting additional secrets if only you can guess the proper username/password. Unfortunately, none of my guesses have worked, so there's little I can say. This obviously cuts into the promotional value of the site -- if you're going to have a secret area in a site like this, you've got to have enough clues around that the secret gets out. But, overall, it's a nice addition to the movie's promotion at what was probably rather little expense.