Well, I am a bit concerned that the network now shows 75% as other.
A bank or credit company would not care if the lost money doing this. Bitcoin is a very small economy, and only some of it is being traded in the markets. It seems to me this would be possible.
It shows a large amount as 'other' since at the moment a lot of people are switching to smaller pools because the largest pools are getting ddos'd(my primary and first two failovers are down, personally), and the not-so-large-but-still-big-pools are getting overloaded because people are switching to them suddenly, also crashing those, so the smallest pools that are not well known publicly are taking over(there are numerous pools in the <100 GH/s range that are not included in graphs and would fit in the 'other' portion).
tl;dr the hashrate of the 'top 10' pools has tanked thanks to a kind of chain-effect from the largest couple getting attacked