Commenters...

Not actually getting any, I don't really have to distinguish between the types on my own...but this bestiary could be used like your North American Field Guide to the species.

When I comment myself, I usually TRY to be:

The Droll - The mainstay of all fun sites, this poster regularly tosses out clever comments, plays of words, one-liners, amusing pictures. There’s a lot of these characters on places like Fark.com

but I fear that others would tend to classify me as:

The Lecturer - This is the buzzkill pedant who feels the need, even in a casual, light comments section to post a 1,000 word exegesis on what everyone should be talking about. Hey, thanks pal!