I just came upon Dogecoin today and began mining as well.
I won't buy any special hardware as it's too high of a risk and I have real-world expenses.
But it's fun mining a ridiculous one that will probably not go anywhere.

I'm using my GeForce GTX 680 and pulling ~200KHs... seems acceptable.
Just waiting to get my first payout in my pool of 50k Dogecoins.