okay you guys this is all well and good, but my cookie game is really only the tip of the iceberg of online time-wasting so here are a bunch of other similar (often better) games, compiled from a list someone made on /v/ : (WARNING, these are some serious time-wasters, some of this is way more addicting than Cookie Clicker - DO NOT PLAY IF ALREADY SLEEP-DEPRIVED)
Candy Box, which actually inspired me to make Cookie Clicker in the first place. it has dungeons and stuff, I think it’s CHARMING
A Dark Room, which is super-rad and surprisingly good-looking for a text game
Gold and Gems, pretty much Candy Box with (not very good) graphics and none of the humor
BoxCar2D, which seems to be a car-generating genetic algorithm
Progress Quest, if you don’t even feel like interacting at all
Powder Game, where you spray particles of various materials to create strange new worlds (another favorite of mine, check out the guy’s other games too !)