Simply informing of the ban.
In total, I've easily gone through over 300 D3 accounts since launch. Each account usually makes a return before it's banned, with the exception of actual banwaves which wipe the entire lot out.
The PC spec is nothing spectacular, it's just multiple of them.
2x 250gb SSD's, i7-2600k overclocked to 4.5ghz, watercooling, 16 to 32gb RAM, the majority are running GTX 680 graphics (one has the 690, but the cost isnt worth it).
The next upgrade will probably see me moving towards a 6-core processor, with 12 thread support - They currently cost in excess of $800 though and it's hard to justify such a spend. It would add maybe 5-6 bots, whereas for the same price I could have another machine capable of 20+.