Any,
Let me tell you..... I can probably understand how you feel. I have been to message boards lately that made me cry, and these were Islamic forums, where people were cursing Muslims, the prophet(pbuh) and filth like you wouldn't believe spewing from these people. The prophanity was just unbelievable. I tried yelling at these people, argued with them and even insulted them back (without the cursing of course). I have seen evil people post things in Islamic forums that just made my stomache turn. It's so horrible what people think of us. After going through all of that in the past few weeks, I have to ignore them. I am so easily angered these days.
If you don't mind, I'd like to suggest something to help you........ that when you see a post from someone that you know is a nasty person, and you just know ahead of time that they have nothing nice to say about Islam and the Muslims..... just scroll right past the poster, and go to the next message from one of your brothers or sisters.
I am personally sick and tired of people who have no interest what so ever in Islam, flooding Islamic forums just to cause trouble. One person said that they have been visiting Islamic websites for five years. Five years this person has dedicated to causing trouble and bothering people. It's just unbelievable.
I only want to give you some encouragement, not really tell you what to do. I'm sure you can handle yourself as an adult, but just know I believe I can understand how you feel, to a point anyway.
Salaam.