Dorks, Geeks, and Nerds

[Criquefreak]

And "dork", I'm pretty sure is exclusively an insult, although I could be wrong.

Seeing as it's a slang term for a particular body part, you're most likely right.

 

[elilupe]

Geek is a person who is interested in technological/fantasy stuff. So pretty much Escapist people.
Nerd is a person who values intelligence very highly and are constantly studying.
Dork is someone who is classified as weird by others.