On Friday, November 15, 2013 8:43:12 PM Robert Williamson wrote:
> Miners might not be enough though, miners only incentive is transaction
> fees, they can include whatever they want and they prefer the highest
> payer.

No, miners incentive is also to increase the value of their mined coins.
If Bitcoin is unusable, that value will drop quickly.

> It might be better for nodes to drop all transactions which have outputs
> going to addresses that are already known, similar to what they already do
> with low tx fees.

Actually, this patch will theoretically do that too, since it's affecting the
mempool acceptance.