I have recently stopped GPU mining as the network has made it much too difficult for me to mine without the use of ASICs. I invested in several miners from Butterfly Labs and have received the first of my Little Single SCs. The Little Single SC puts out 30 GH/s and currently generates around half a bitcoin per day. I am awaiting delivery for another Little Single SC and Single SC that will bring my combined hashing rate to around 120 GH/s.
I have stopped using my GPU miners as I live in a warm climate with high peak electricity costs, and with my BFL ASIC Setup, it felt like I was spitting into the ocean with GPUs while they are in the shadow of my ASIC setup next to it running 100 times faster than each of my GPUs.
In the past people have compare the price of their electricity being higher than the value of the BTC they mine, and even though the difficulty is constantly rising, I would remind you that there were many people who said they missed the boat on bitcoins and sold all of their hardware while bitcoins were worth less than a dollar. So at the time of this article being written, the bitcoin is worth $100 and you can easily cover the cost of your electricity with an ASIC, many people believe that a single bitcoin has the potential to be worth thousands down the road. Like any investment, there are no guarantees and you shouldn’t invest more than you can afford to lose. I am in for the long haul, and will continue to invest what I can afford.
Good luck and happy mining!