>Harvard – one of the most prestigious universities – awarded an MBA to George W Bush. A man many of us wouldn’t trust to sit the right way round on a toilet.
As a reason not to trust Harvard. The world gets it. Those republicans surrreee are dummies.
/puke
The rest of your article is a bit naive. Computational linguistics is not considered a solved problem yet. Yes, twitter might have 26,000 or some odd tweets from you, but that doesn't mean that they "know" anything about you. It's dumb text.
In fact, now that you've tweeted at the sun newspaper, how is twitter to know that you aren't interested in that newspaper? You're interacting with it, of course you would want to see ads from it, right?
This [meaning targeted advertising] works for facebook (although arguably well since the meme is that facebook ads don't perform) because of the "like" system. I target ads at people who have "liked" things, not at people who have talked about them.