If you peaceful Muslims are trying to defend your religious beliefs, I think most people would understand and sympathize with your motives. But by doing it here, what have you accomplished? On this site, and on many others, we are trying to defeat terrorism. Have you helped our cause? No. All you've done is try to convince us Islam is great.See the full article here.
You need to understand the effect of your defense on the non-Muslim mind. If you want to end Islamic terrorism, and if you understood what effect you had, you would stop defending your faith to infidels.
Because even if we all believed you, so what? Even if you successfully convinced us Islam is really a religion of peace, what difference would it make? Does it help us defeat terrorism? No, not at all. We have terrorists quoting the Koran (urging Muslims to kill infidels) and we have other Muslims saying the Koran is only about peace. Where does that leave us? You've replaced clarity with confusion. You've replaced resolve with hesitation. And to that degree, you've given the terrorists the upper hand.
Also see his seven steps to fighting terrorism.