This is a fun little article on the difference between GPU mining and ASIC mining, by #Kryptex.
Discussion
Why did the ASIC miner break up with the GPU miner? Because the ASIC miner said the GPU miner was too general and not specialized enough for their needs. But the GPU miner said the ASIC miner was too expensive and only meant for professionals. In the end, they decided to go their separate ways and mine solo.