Where LOLCats come from

Today on xkcd, the ultimate nerd webcomic: where LOLCats come from. Link

See also:
Massive cache of kittah pix (aka LOLcats, cat macros)
Pedantic overanalyzer sucks all the fun out of LOLcats
Pedantic overanalysis of LOLcats not pedantic enough, says blowhard
LOLtrek
Cat macros hijacked by heartless homosexuals
Oh, how I love the gebril macros!