How to troll a forum:
(The following indented material was NOT written by me.)
From - The Subtle Art of Trolling.
A troll is no different to any other Usenet posting. That needs to be stressed.
Any article that you decide to write should be written with a view to it actually being read by large numbers of people. Simply X-posting to large numbers of irrelevant newsgroups is not creative trolling - it is just spam and should be avoided.
The experienced troller spends time carefully choosing the right subject and delivering it to the right newsgroup. With trolls, delivery is just as important as the subject.
Start the troll in a reasonable and erudite manner. You have to engage your readers' interest and draw them in.
Never give too much away at the start - although a brief abstract with hints of what's to come can work wonders.
Construct your troll in a manner to make it readable. Use short paragraphs and lots of white space. Keep line length below eighty characters. Use a liberal amount of emphasis and even the occasional illustration.
A good rule of thumb is that as your troll becomes more and more ludicrous put extra effort into the presentation - this keeps the mug punter confused. Let confusion and chaos be your goal.
Notice that the explanation refers to usenet. This material is very old, it was written long before other forums became popular. However, being old does not mean it is outdated.
A "mug punter" is someone who is easily confused.
The article refers to a "troller," and this is actually correct. A troll is a posting, a troller posts the troll.
Using lots of white space in a troll is not necessary, as the most successful troll post in history - which I read years ago - was pretty much just one long rant paragraph. What mattered in that one was the idea that it was supposedly written by an American complaining about America. Politics pretty much trumps every other rule.