[ambulatorybird]

I took some philosophy classes in college, where I learned about the concept. If you want to read more, the best place to start would be the references and external links provided in the Wikipedia articles. Also try googling for papers by Grice.

[lionhearted]

I'm skimming and bookmarking some Grice right now. Exciting stuff. Thank you :)

[saint-loup]

Just to add few links basically in the same field:

http://en.wikipedia.org/wiki/Pragmatics

http://en.wikipedia.org/wiki/John_Searle#Speech_acts

http://en.wikipedia.org/wiki/Relevance_theory