Another reason gifting would be good. When someone asks me for the game, I can just buy it for them. I really want GOG to succeed.

I like this idea, I like it a lot.
When Stonekeep comes out, I'm going to buy it for my mother(her most favorite game ever), and it would be awesome if I could click a button that says "Give the Gift of Gaming" (or something), purchase it, put in her email, and have it send her a one-time use download link for the game.

I found this in the EULA.
"You may not transfer, distribute, rent, sub-license, or lease the Program or documentation, except as provided herein; alter, modify, or adapt the Program or documentation, or portions thereof including, but not limited to, translation, decompiling or disassembling."
:/

Some of these classics are around $5.
Some up to $10.
And they don't have DRM.
This is dirt cheap.
Everybody should want a legal digital copy for that kind of chump-change.

Seriously. $5 bucks. You can't even get a 5-pack of CD-R's for that.
That's so cheap, it's not at all worth it to pirate or share.
Edit: Actually, speaking of that, it'd be interesting to look at torrent sites in a few weeks and measure how many people are pirating gog games/versions versus DRM'd retail games.
Even though gog games are "easier" to pirate, I bet there won't be as many.

I like GOG because it has games I have like Descent 1+2 but includes DOSbox, they're cheap, no drm to bother with, they come with manuals, free stuff, free support, a snappy website that is designed very well, the people on here seem great.
Steam is also really good with their steam deals and as such, i've been buying and taking advantage of those things more often than I ever have before. The price for these games is cheap as heck and if it's a game you like, it's the price of a value meal at a fast food restaurant and gives you more enjoyment for a longer period of time.
Love this site a lot.

This is where gifting games becomes a perfect opportunity for more sales. Yes $5-$10 is pretty cheap for a game, but people do go through hard times where even that is money that needs to be saved. This way, friends could gift games to other friends and help them out. Not to mention, by doing this, it also helps avoid piracy. Although someone may not be able to afford it, at least they are playing a legit copy and supporting the developers who are trusting enough to give us DRM free games.
You should be able to gift games to people who do have accounts, as well as those who do not. For instance, you could gift a game to an email address. That person can then come to GOG, create and account, then claim their new gift. It would also help introduce people to the service that may be wary of trying it at the start as well.

Perhaps you should add a friends list to help with this? Or you could do like other sites with gifting capabilities to enter the email address of the person you're giving it to?

$0.99 for a great 5-minute song on iTunes, Amazon, etc.
$5.99 for a great 30-hour game on GOG
Do the math in determining which is a better value.
AND PLEASE DON'T PIRATE :)