In case you were wondering, here's what Wikipedia has to say about internet trolls:
In Internet slang, a troll (pron.: //, //) is someone who posts inflammatory, extraneous, or off-topic messages in an online community, such as a forum, chat room, or blog, with the primary intent of provoking readers into an emotional response or of otherwise disrupting normal on-topic discussion. The noun troll may also refer to the provocative message itself, as in: "That was an excellent troll you posted."
While the word troll and its associated verb trolling are associated with Internet discourse, media attention in recent years has made such labels subjective, with trolling describing intentionally provocative actions and harassment outside of an online context. For example, mass media has used troll to describe "a person who defaces Internet tribute sites with the aim of causing grief to families."
Basically, I describe an internet troll as the world's biggest loser. This is a person (or people, because I'm certain there are a whole lot of them out there) who gets his or her kicks from reading blogs and posting nasty comments just to make trouble. These people are cowards, hiding behind the name of "Anonymous" and attacking people who are using the internet to express themselves. Some people would consider these trolls as bullies, but I don't. Bullying involves an imbalance of power, like an older child picking on a younger one, or the federal government imposing ridiculous education mandates on our children in return for financial reimbursement. These trolls have no power. They are weak, miserable people who think that putting others down will make themselves feel better. They particularly prowl parenting blogs, and will attack a parent who has a sick child or who has lost a child. These trolls are disgusting cowards.
I feel badly for the people who are vulnerable, like following the loss of a child, that are attacked by these scummy trolls. It is really just pitiful that adults resort to this behavior for amusement. Play Candy Crush instead. It is no more productive, but at least it is not destructive.
I write for me. I write because it helps me. I hope my friends and family, and even complete strangers enjoy reading what I've written. I understand that not everyone will agree with me all the time. I write what is MY opinion, knowing that not everyone supports it (but they should). If it offends you, then don't read it.
And if you must comment negatively, have the balls to put your (real) name on the comment.