GOG.com is giving away The Witcher: Enhanced Edition Director's Cut
free. They are using this as an incentive to check out their GOG Galaxy client.
Here are the instructions:
How? Download or update your GOG GALAXY
application. Go to the "Recent" view and check the banner at the top. Click the
giveaway button if you agree to receive news, updates, and GOG offers. After a
while, the game will show up in your games library inside the application and in
your GOG.COM collection.