[Air-L] A typology of internet forums?

[Nils Löber]

Dear list members,

in the course of researching for my master's thesis on image board  
culture (think 4chan, LOLcats, Rickrolling etc.) I have been trying to  
find literature describing a typology of internet forums and forum- 
like precursors (BBSes/USENET/...) with respect to formal properties  
such as moderated vs. unmoderated, anonymous vs. pseudonymous vs. real  
names, distributed vs. centralized and so on.

Even though I put quite some effort into finding literature, I  
couldn't find anything even closely approaching a comprehensive  
overview/typology. In fact, the wikipedia article on internet forums  
was as close as I came.

Can anyone here help me out and point me to relevant sources? Many  
thanks in advance!

Best regards
Nils Loeber