A lot of Dead Space giveaways

probably because it's the weekend deal on steam

It's on sale

Because it's an awesome game?

Better chances of winning a copy! :)

there is a promotion on amazon, Dead Space is 5$ ... and if you have a 5$ amazon coupon you can buy the game for "free"
The only bad thing is that these serials are working only with Origin, so it's non-steam

There's a weekend deal going on, Dead Space and Dead Space 2 are available for $5 each on Steam.

Because, wait, why are you complaining?

I'm not complaining, was just wandering )