It was being mentioned pretty often on shacknews around the time the beta was launched, so I signed up to play one of the free games, I think it was Beneath a Steel Sky, first time I'd actually played the speech version! I'm exactly the same way, bordering on paranoia. I blame my OCD tendencies.

I think I heard about GOG for the first time on The Witcher forums. I bought Fallout games in Interpaly promo which they had on public beta launch. Since then I bought many games. What's more I menaged to win three time a free game code. I love GOG contests. I think I will name my first child Giveussystemshock or Marcin (that's actually pretty decent name).

I went into a shop (I think it was a BlockBuster) to look for any interesting second-hand games they might have. I found MDK2 for PS2. I got it, since I'd always wanted to try it. Back when it came out, I'd borrowed the PC version from my brother to see if I'd like it, but I couldn't get my machine to run it (there was some weird Glide driver problem). I asked the guy behind the counter if he knew whether they had a copy of the PC version anywhere. He said they didn't, but then told me that I could get it at this brand new site called GOG.com. As soon as I got home, I went to the site. Unfortunately, it was in closed beta at the time, but you could enter your email address to be informed when they opened. A week later they did, and I've been here ever since.

Looking for alternatives to Steam sometime during 2009 and discovering there was a good number of digital download services. GOG looked the most interesting, though I never bought anything from any digital download service but Steam until the later half of last year. I've now frequented a more diverse selection of outlets, GOG now being by far my favorite. I've bought less games from Steam than ever. :P

I found out about GOG while browsing an abandonware site, Home of the Underdogs, and I saw a banner ad for GOG. The good thing about the HotU site I was on (it had splintered into a few sites for reasons I never cared to learn) was that the moment they discovered a game was being offered for digital download, they'd remove it from their site...they'd leave up all the info about & the game, but they'd say "This game is available for purchase at [insert DD sites here]." I thought that was pretty classy.

HOTU=best site ever, I plan to slowly replace my "abandonware" collection with gog downloads as they are released ;)
On topic, for me it was Planescape Torment, it was never on sale here in Serbia and my relatives in germany were never able to get it for me, it will be my next purchase on gog :)

First I heard of GOG, I read a lot of praises from a finnish games rag Pelit. What finally made me create an actual account were the cheap adventure games I had been looking for.

I heard about it shortly after it went into public beta through another forum I frequented at the time, and was initially fairly skeptical about it. I think it was Arx Fatalis that I chose to basically be a "test" purchase, as it was a game I'd wanted to play and I'd had trouble getting a copy of it to run on my system. Needless to say that "test" was pretty much passed with flying colors, and over two years later I'm still here with more purchases than I've had time to play.

Some post in another gamers forum about all the good old games that you can get here. Then I went over and discovered Master of Orion and they had me. :)

If I recall correctly, I heard about it from the comments on Slashdot. Came over to check it out, saw "DRM Free", joined up and started buying. First thing I got was a promotion, which I got because it had Cannon Fodder in it :)

Joined up about 6 days before the "Shutdown Stunt" and my reaction to it was "Woah, that's sudden. Sucky... at least the games I brought will still work, whatever happens" as I figured they had been pressured into adding DRM, like what happened to LGP (Linux Game Publishing).

Heard from GOG just because of the shutdown stunt. Never heard of it before.

My first thought was: damn, they had so many games, I loved to have.
Second thought after I read the text about 3 or 4 times... ahh, they only go out of the Beta stage, okay I can wait a few days.

I first noticed GOG in an Arcanum ad at Rpgwatch.com

I read somewhere that Beneath a Steel Sky had been made freeware and I came across GOG when I was looking for somewhere to download it. The amount of great games here made it one of my favourite sites.

Saw some guy post about the fallout deal on steam not being as good as the basic deal on GOG, that xmas bought Tex murphy on special and never looked back

I heard about it through an article in gamespot (I think) about the shutdown stunt. I saw they had Master of Orion and Red Baron (amongst other favorites) and knew I had to become a GOGer!