Here are the different species now scientifically named.
Aboriginus Typus
The original internet troll which started it all. They are knon for exescively using caps and not really meaning anything. Commonly found on politics forums.
Raspicious Acronimius
This troll is rather the complete opposite of the Aboriginus. It usually is polite while arguing but is very racist towards lots of things. Found on politics and religion forums.
Absolutus Misspelius
This type only uses chat language and cannot be bothered to utilise elequent language because they don't facilitate proper English. Mostly found on Miscellaneous forums.
These are the only trolls i can think of. If you have more,post them and they shall be added to the list.
The most random and primitive of all trolls. They are primitive because they can only use chat lingua and they are random because they switch topics so fast it's hard to see what they would do next.