Argumentics: excellent blog on pragmatics and argumentation theory

Argumentics has only been around since late 2009 and already has over 200 posts. I don't know who writes them (I can't recognise him/her from the profile photo -- see below) but he/she really knows his/her stuff, and can explain it well too. Two highlights:

The pragmatics of what is said

Ljubljana meets Ducrot

Mr/Ms Argumentics

More recently there is coverage of formal semantics, with a propositional logic quiz, and lovely explanations of lambda and higher order types.