If you heard that Valve's hit Zombie shooter Left 4 Dead 2 was free for a limited time but didn't get it yet - don't fret, there's still time. According to Valve's Left 4 Dead blog you have until 9 am PDT, or 1 pm EDT. From the blog:
"To celebrate the holidays in a special way this year, Left 4 Dead 2 will be free until 10AM PST 12/26.
It will be free as in, grab it now, pay no money, and it is yours to keep forever – FOR FREE!
To claim your L4D2 gift, all you need to do is install it."
The only catch is that it has to be downloaded and installed on your Steam account by the deadline. If you don't own it, it's well worth the extra effort to get it, but as we already noted, you'll need a Steam account to do all this...