http://blockchain.info/charts/hash-rate http://blockchain.info/charts/hash-rate -- This graph shows the total network hashing power, a.k.a. mining competition.

http://blockchain.info/charts/hash-rate http://blockchain.info/charts/hash-rate -- This graph shows the total network hashing power, a.k.a. mining competition. As ASICs are finally being released/shipped on a noticeable scale, the network hash power is massively increasing and will probably increase 1-2 orders of magnitude more. Mining profits will most likely be driven to almost zero. EDIT: another thing to consider is that the ASIC companies have had much trouble shipping on schedule, affecting ROI calculations