Where do you buy your games from?

Steam, GMG, Amazon and... that's about it. I also trade for games.

Edit: Also Humblebundle, almost missed it.

Trusted private traders. I know a few guys who are trustworthy and experienced traders not ripping me off.

Aliens.

Only bought games from Steam, Amazon, GMG and Nuuvem so far.

Steam from trusted trades and GMG. Except bundles and retail copies I don't spend real money on games anymore.

Got most of mine via Steam Store, GMG, and the Humble Store.

Steam mostly. Since the new currency stuff.
Other than that, Gamersgate, Humble Store, GMG and Origin. In that order.

gog.com

I usually don't buy my games from stores, but if I do, I use HB and GMG. Usually I use SteamTrades (And my Russian friends) :)

Steam, humble bundle (both bundles and store), occasionally bundle stars, it's not really worth going elsewhere since all the games are being discounted everywhere from time to time... unless of course you want them immediately, for me, it's just another annoying registrtion, so no, i dont even have humble bundle account

Steam and Webhallen

Steam, Humble Bundle & GMG. I traded in all of my Xbox games a few days ago at EB Games & got $600 in-store credit, so I'll be buying from Steam for a while.

kinguin.net

Humble store,gog,gmg,amazon,kinguin :)

Steam, Humble Bundle and GMG (only when I have credit from rewards).

I use G2A. Really cheap steam/origin key (e.g Middle-earth: Shadow of Mordor is $34.52 right now or ARMA III is at 33.99 euros)you can go to site from the link.And is very trustworthy I bought bf4 from them.
And yeah the link my look odd as it has my username in it .It is because it is a referral link it will tell the site that i am the person who told you about their site and i may get a little bonus if you make a purchase.If you make an Account at G2A goldmine then you will get your own personal Referral link and by spreading it you might make some money.

And yeah there is a weekly sale going on(be sure to check it) : Far cry 3 $5.05,Assassin creed Black flag $11.37,7 days to die $13.28 ,Metro last light complete edition $7.58 and many more.

Steam and G2A. G2A is the best site ever

You could always check out bundles. I'm a tad biased but Groupees www.groupees.com has some pretty sweet deals for cheap. There is also humble bundle, and other alternatives.

most of my games come from bundles, mainly humble but occasionally groupees indiegala indie royale, never bought a bundlestars one though

Cards from games from said bundles may be sold off to fund specific purchases in steam store

I also get some from humble store discounts and some games from GMG using credit

Steam, bundles, GMG.
I rarely buy games. Like, VERY rarely. I win what I own.

I think I bought about 30 or 40 games since I'm on Steam.

I'm a moocher. :(

Trades, kinguin, sometimes G2A

Steam, Greenmangaming and Amazon... ^ heard bad things about G2A.. selling stolen, invalid... used keys... thats why I never used it...

Steam and GMG, and trading.

Avoiding G2A !

Nuuvem, Kinguin.net, Humble Store (for charity)