I honestly think Brasil have enough quality to see things through if they play well - Ronaldo isn't their best player anymore, on his day a true great but just not quite what he once was. Brasil are pretty close, if they play to their potential, to equalling the great teams of their past.
One factor that might damage the chances of Brasil, Argentina etc is the weather - unusually cool for the time of year, and not to the liking of those from hotter climes.
The BBC are going all-out to cover the tournament properly; those in the UK who are unfortunate enough to be working during games should be aware that they can watch the BBC-televised games online.
BBC's coverage page. Theses big events always seem to take an age to arrive, but all of a sudden it's right round the corner.
(Don't forget that the fantasy game allows transfers.)