I've been keeping silent on this issue. Here I come!

I was always for the rear wings of the three cars in subject. Be it unfair, I just like the fact that Ferrari and McLaren are at the back, and we have new teams leading. I still think Ferrari have more issues on their hand than just the rear diffuser. Their new car is really crap. McLaren have exactly the same problem. My honest opinion is that their car is even worse than the Ferrari. I reckon Lewis Hamilton's ability to finish in the points is just evidence of how much of a better driver he is. With a new rear wing, Hamilton will get podiums and a win or two this season, if he doesn't get disqualified from the championship.
I honestly cannot see a Ferrari or McLaren winning any of the Championships. But, Brawn won't be as successful this season with other cars matching their rear diffuser. I see their rear diffuser more "illegal" than the other two. I have absolutely no problem with the other two cars.
Renault will have a good car for China, Alonso will do great, and Piquet perhaps as well. It's really a make-or-break season for Nelsinho, and this decision, and Renault's preparation for the decision will do them favours and Nelson.
I don't like Ferrari's preparation. It appears they have been too busy waving their winger at the other teams, than actually doing something. It also appears that Ferrari did some testing of their new front wing. Isn't that illegal?