I'm using hardware that I already have to mine. I'm not investing in anything since ASICs are coming out and the price is too unstable. Just too many questions and too much uncertainty. My brother had a 5770 just laying around not being used so I'm using that and sending him some of the earnings.

I think there is more money to be made trading coins actually. I made like 10% trading between BTC and LTC on BTC-E.com yesterday which is faster than I was making mining. I think it's a good bet to buy litecoins if you're taking a long position. I think people are going to lose interest in Bitcoins when it's unprofitable because of ASICs and the price is going to fall. It's difficult to predict what's going to happen though.