"As this software was, for a short time, embedded within pages on the ABC website, visitors to these pages may have been exposed to the Bitcoin software, however, it is not possible for the ABC to ascertain whether any audience computers were affected by Bitcoin software." This guy was actually using the processing resources of ABC's clients, effectively

Not the 6310 in a Brazos it won't... The fastest 6xxxM in the mining wiki is 6630M 49 Mhash/sec (probably overclocked too). At least 30 watts to pull that off.

Brazos' GPU is low power but its also quite gutless. To use bitcoin mining as an example a single E-350 does 12 mhash/sec. Your 72 watt example would do 48 mhash/sec. A single Radeon 5770 would do 150 mhash/sec and use up only 110 watts (say 130 watts with a low power Sempron). Larger GPU cores are much more power efficient.

Heh.. my Microsoft wireless keyboard takes in batteries in physical series.. Guess they'd have to rework that one