Certain Individuals Baiting Others into arguments, and Diminishing the forums and community

Example: You Create a post asking a question about a game, and hide a giveaway, then strolls along a troll who starts covertly insulting the thread maker

Something seriously needs to be done, I've experienced it myself, i've seen others have it done to them and Everyone of the people that do it are still around, its getting to the point where i just feel like leaving, Seriously am sick to death of it, and they are untouchable apparantly.

I love steamgifts but a serious cleanout it needed.

Detailed Problem:
Some will Say this is the state of the internet and i agree, but when i troll is not being banned and is allowed to continue what he is doing it tells me 2 things, No one Cares and No one is Trying to Prevent it.

Now People are banned for other reasons so why not this, lack of knowledge of the trolls, Lack of care...I dont know but What it seems is that people who have contributed a little bit seem to become immune to bans. They can walk all over someone in a post and then when that other person gets offended and hits back, Wham the victim is banned.

I expect alot of abuse and i welcome it, Because i want a better experience for future users, its worth the risk.