I suspect that this is the case for others as well.
So ... please, discuss the merits and drawbacks of different rule systems. Avoid things like:
D20 is good for newbies and lazy people ... this implies that you're a bad roleplayer, or lazy, if you play any d20 games. Not so. This just means that you're using one of the more popular systems out there.
Do include things like:
i think abstractions are not cool ... this is stating your preference for gaming style, giving those you are debating with some background on why you might like or dislike a given game. Although it does also open you up to posts telling you why abstraction can be good.
And whatever you do, don't use the length of time you've been playing as the "proof" of what you say. There is someone in this community who has played longer than you, and they disagree.
But please, the most important thing to remember is that there is no such thing as a twinky game, or a game that causes good roleplaying, just because of the system. Some games may encourage one or the other with varying degrees of success, but it comes down to the players in the end, not the game itself.