I'm up to eighty five now.

Number of games: 47
Free: 3
Gifts/Prizes: 1 or 2?
Gifted to others: 5
"Free" from promos: 4? I think
So... paid for: 43, maybe?

Updated.

At 45 + the 2 Free = 47

So far I've got 70.

19. Most from promos, the biggest batch was from the anniversary one. One freebie (Beneath a Steel Sky) and one which i won from a giveaway. Last game I bought was earth 2150 with the dollar off from the Gem of the week offer.

It's 3 free.
if you subtract those, then I'm at 40.

from gog:
Freespace 2
hostile waters
giants citizen kabuto
sacrifice
empire earth 2
descent 3
arx fatalis
mdk2
fallout 2
Games I have that are available on gog but I have purchased elsewhere:
disciples 2 gold
capitalism 2
jagged alliance 2 gold
gothic 2
unreal tournament 2004
oddworld abe's exodus
oddworls abe's odysee

Me too.

27, counting the free ones. No, I can't be bothered to list all of them.
There's also 5 more games from the GOG list that I own that I got from somewhere other than GOG.

19. As with everything, I am a stauch supporter of quality over quantity. Also, I cannot for the life of me understand why anyone would buy a game from a digital distribution service for full price unless they are going to start playing it right away. It's not GOING anywhere.
So, for those people that have a lot of GOG's, it seems pointless to me, unless they have finished them all.

*sigh*. I wish you could still get OFP. Damn codemasters.

13 here so far, more if you consider compilations as multiples, otherwise closer to 20. And I'm always lookin for somethin else to get, even before I've finished the others.

18 (not counting the free games).

17
All three Fallouts
Both Duke Nukems
Postal 2
Beyond Good & Evil
Prince of Persia
Freespace 1 and 2
Earthworm Jim 1 and 2 (one game)
Unreal Tournament 99 and 2004
Painkiller
Giants
Sacrifice
Colin McRae 2005