Sometimes when you post stuff on a forum, and no one replies to you, no one comments on your post that you just put a few minutes worth of effort into, you start thinking:
"Respond to me you f^cking c^nts!"
"Acknowledge my existence you f^cking c^nts!"
Especially when you see the same people comment on other peoples posts (that you may see as less worthy of response in your mind ...) it does make you very angry!
But you've got to look at this way:
1) Can you be arsed to reply to other people's posts when you have nothing to say? Of course not. There's only so many times someone can say "What a fantastic ..." before it all starts to sound a bit trite.
2) Do you think other people are offended because you don't comment on their thread/post? Of course they are. They are probably thinking "if you don't comment on my thread, I'm not commenting on your thread" - yes, it is all very childlike.
The reality is that:
People can be busy or stuff and no one is really ignoring you on purpose, and those who are, you don't really need them to answer.
As highlighted above, if people are ignoring you, they are not your friends, and you shouldn't give a sh!t about them.