Ya, that's what I find, you definately don't want to show anyone that they got a rise out of you. You also don't want to respond to stupid comments and you don't want to argue on the internet. I've found that you have two choices:
1. Ignore and don't respond.
2. Respond in a way that is witty, with some humor that turns the tables. i.e. makes you look good, they didn't get a rise and makes them look more the fool.
#2 is a hard one to accomplish, but if you can manage it "have at it hoss". I've found that's actually a good one to respond sometimes.
If someone is saying "You suck, I can jump 400 feet with my bike and it's only an 80". You can always just reply "have at it hoss.". Another good one I like is "Video or it didn't happen". That's a good one for youtube replies. People say they did this or that, well, just say "Video or it didn't happen" and then don't respond. Because half of the people on youtube never have videos

You never want to have a response though on the internet that makes you look childish though because it will live forever in cyberspace

So if you don't have a mature response, probably best not to respond
