No, and I'm sure the authorities don't think that merely going on a website can allow them to assume all sorts. The other week, I went on the Mossad website and looked at the recruitment bit - if MI5 saw that, they might be like, "ooo, interesting... *probe probe probe*... oh wait, he's completely Kosher, move along" rather than assuming I'm a sleeper agent, as there's not reason to believe that. In the same way that merely looking at guns on the internet doesn't mean someone's going to be Breivik mk. II.
Again I'm more meaning people abusing their access, rather than the Big Brother paranoid conspiracy theory tinfoil hattery.

I don't mean that going to the Mossad site means you're pro-Israeli as far as MI5 is concerned. I mean that the guy who lives across the road from you might see it and mention to someone in the pub after a few drinks "That guy across the road is into some extreme politics if you know what I mean!" All you did was read the BNP manifesto, check out Ayn Rand fan sites and post on a Nietzsche philosophy board... and before you know it you're a neo-nazi.
