Learning, idiocy, procrastination, salvation, damnation, humor, satire, and so much more all in one little package (or several servers, whichever one you'd like to go with).
It also promotes individuals' eventual detachment from reality.
Internet guy #2: YEAH LOLZORZ ROFLMAO IT WAS TEH EPIC
Internet guy #3: HEY BOB HOW WAS YOUR DAY I WATCHED JUSTIN BEIBER ALL DAY AND THE JONAS BROTHERS EVEN THOUGH IM A GUY
B0bMaster789: o u no. teh usual. gettin ep1c l00t for my lvl 80 elf druid on WoW.
Internet troll: WHAT THE FUCK YOU GUYS NEED TO GET LAID. SERIOUSLY YOUR SUCH FUCKING LOS-- "Honey time for bed!"..."NOT NOW MOM!!! PLEASE!!" *cries*