Last time I checked this was the 4th edition discussion forum, not the only talk about 4th edition in a good light forum.
Consider your audience: This is a forum for the discussion of 4e. That means it is filled with folks who are highly interested in 4e - meaning they are predominantly fans of 4e.
If you intend very focused, constructive critique of particular aspects of the game, then you are fine. If your intent is to say the whole thing stinks and should be tossed out, then it is like you've walked into Fenway Park, intentionally wearing a Yankees hat, shouting that the Red Sox suck - it won't end well.
So, consider that before you continue.