What do HP, MP and EXP mean?

These terms are taken from Role Playing Games.

HP (Health/Hit Points) is determined by your average posts per day.

MP (Magic Points) is determined by your join date related to your post count.

EXP (EXperience Points) goes up each time you post, and when you get to 100%, you gain a level and the EXP drops to 0 again.

This Q&A was found on Language Fun : http://okenglish.tw/modules/smartfaq/faq.php?faqid=4