I wouldn't ignore someone because they insulted me. I was called everythink in the book as a mod.No one. I'm not soft. I check my feelings at the gateway to the interzweb...sure, I can get passionate about a topic, but I don't need an "ignore" button just because my jimmies get rustled. The ignore button is the equivalent to a "safe place" for softies.
If I ignore someone it will be because they are a one trick pony, regurgitating the same schtick in every thread. It gets old and boring very quickly. Like I said earlier, I can ignore their threads but when they hijack a thread I'm participating in with the same BS, it's harder.