What exactly is this 'dust spam' that this 0.01BTC transaction fee "solving"?
It seems to do more harm than good because it prevents micropayment implementations such as the one bytemaster is suggesting.
I'm not aware that the network is straining under the weight of the existing transaction volume.
Anyone wishing to send a lot of transactions can already do this by sending x BTC to themselves a lot.
There are builds that remove this limit, mainly for testing right now, I think that's why it's disabled until it can be tweaked a little more.