Glossary of Internet Terminology and Acronyms

A (5) M (1) B (1) N C (5) O D (5) P (3) E (1) Q F (2) R (1) G S (1) H (3) T (1) I (1) U J V K W (1) L (1) X, Y, Z

"What is 'MT'? What Does it Mean?"
You see this peculiar expression in online games or in instant messages. But what exactly does it mean?