Most of the stuff on that site is gross exaggeration and much of it rubbish.
If we stick to just the real truth about the EU, it becomes a matter of personal choice. Personally I am a democrat, preferring to be governed only by laws passed in our own parliament by our own elected representatives. It was the way I was brought up. And I am not a U-kipper, but a reasonable man.
Others don't mind being governed partly by our own parliament, partly by a European parliament of which we have elected only a fraction, and to a greater extent by a European Commission which has not been elected by anyone and is therefore not democratic at all.
Now, because Gordon Brown welshed on his pledge to allow us to stop it, we have an unelected president, and unelected foreign minister with a huge staff, and a new ability of the EU to enter treaties in its own right without consulting us. They also have the right to alter any terms in the constitution (aka Lisbon treaty) without consulting anyone, and we have lost our veto (i.e. our parliamentary sovereignty) in 40 - 50 areas.
It would be interesting to know how many of my fellow citizens are happy with all that.
Regarding our economy, jake, the most prosperous country in Europe is Norway, with Switzerland not far behind. Both have 100% access to the Single Market without any of the colossal expense and surrender of sovereignty involved in membership of the EU. Could UK follow that example?
Finally, I have just finished a book which shows (with every claim backed up with references so that you can check for yourself) that the fraud and fiddling practised by MEPs make our own MPs look like saints. Happy with that? I'm only asking...