>What the heck is a Gikopoi?
Gikopoi is an MMO with all the filler taken out and just the best part left - town idling. You play as a variation of a "Giko", which is a Japanese cat emoticon that stems from 2ch in the olden days. There are various rooms and each one has varying slots for streaming audio and video. There are also plenty of interesting secrets that you will learn just by watching oldfags play.
>Why should I play it?
Flash is dying soon, and this long standing game may die along with it. It's also apparently a Japanese board tradition to play on New Years Eve/Day.
http://l4cs.jpn.org/gikopoi/flash/gikopoi141_for/flash_gikopoi.html
Make sure to check out some of the guides on the right side of the page for helpful info. "#list" in the chat will list room populations and "#rula" will allow you to teleport to most rooms.
(Note for the new - you can choose not to input a name and you will beget the monikor "Anonymous". It can be difficult to differentiate who is saying what when two or more players have the same name, and this is more likely to happen with Anonymous players. You don't have to register or anything, so you can freely change your name to whatever you want)