The internet is trolling easier than face-to-face trolling because it is much more enhanced and covers a bigger audience than face-to-face trolling. Trolling was initially a noble cause which was once perpetrated by some Usenet veterans pulling simple and innocent or childlike general ignorance types or kinds of jokes on gullible newbies.
There needs to be a children's book on internet manners.
People find cheap thrills in demeaning others and instigating a ruckus. Trolls can easily run away and hide and never face these people again. While most are troll comments are meant to be harmless and mildly entertaining, this can be a form of online bullying that can have serious consequences.