Where do you get all your keys?

Yes.

local key-maker. or write your own key-gen for a game.

People get keys from Indie game bundles, or from online distribution sites such as Gamersgate, Greenman Gaming, etc.

I threat the game company with rubber ducks, thats usually enough.

(thats why i only have SMNC copies in my inv)

Sales...Bundles....IGN Prime.....

Many people buying games to trade them. They often buy games, as long they are on sale and trade it against other games, when the sale is over. So they get many good games and some of them are given away here. That's all.

Thanks for Skyrim.

If you have to ask the wherefores of generosity, you'll never understand it.

Valve game me HL3

I get a key every time I buy something that has a key. Like a house, a car, a luggage container, etc..

They just appear. It's really mind-boggling.

I buy them here

I get my keys when I rented my flat.