Could someone please explain how this is supposed to work. When I klick on "Pick this one" I'm asked to register/log in although I am logged in already. If I proceed to "log in" GOG will log me out (and vice versa) and that's it. Nothing happens.

Same problem here. Either get asked to re-login or get a spinning icon of doom.

Knowing my luck once I finally get through it will be an offer for Jack Keane 2.

We are rushing their servers something awful. You might try refreshing the page a few times.

It was happening to me but then it just worked. I don't have a fix for you. Just keep trying.

I did have multiple tabs of GOG open. When I went down to one, it was able to go through.

It could be worse. You could get an offer for Fallout 2, like I did.

Mine just worked after hours of failing. Perhaps they are winning the Server Wars!

This is why a sense of humor is so vital in life! That said, I would even take a Fallout 2 offer over an hour straight of a spinning arrow.

Yeah, just keep refreshing and hoping that you will get through.

Or try sometimes later when the rush has died down. (probably the best bet)

There's a post tracking what deals are being offered to people here:

http://www.gog.com/forum/general/daily_personal_deals_tracker_2013_drmfree_winter_sale/page1

So at least you can see if there's a reason to keep trying...

Thanks for the info. I was just beginning to question my mental health due to it's "unusual behavior".
And now it worked.

You may be sorry you clicked a button.

I clicked the first button, and got Omikron Souls... a game I already own!

Then you can't click the other buttons! It says "Come back tomorrow for another deal". Well whooptidoo... they offered me a game I already own, and can't pick another until tomorrow? Bogus. Plus... no game for me AND no money for GOG!

In my case, I logged in, got a 404 error and tried again. I got the witcher 2 75% off. Then, after following the link, I looked at he price and didn't seem to have changed to what I got. Since I had the whole day left to buy the game I just went back to the homepage and realized I could pick a box again.

I didn't put the game in my cart, so I'm not sure if I glitched something or if the server didn't just register what I got. In any case, I think I'll wait tommorrow's deal before trying again.

When i clicked it, it offered me Fallout 2 for 2.49 so you can consider yourself lucky :)

for some reason it works if I vote for tomorrows deal THEN click the deal box.