Yeah, I am very excited by this so excellent detective work running 
Yeah sunny, my thoughts were that if it can be done to namecoin then surely it can be done to any coin?? so this poses a potential threat to all currencies right? just as much as someone could 51% attack a chain with enough hashing power... anyone could also now bloat the blockchain with enough power / time and kill anyone with small HDD right and ruin the blockchain for that currency?
Yeah sunny, my thoughts were that if it can be done to namecoin then surely it can be done to any coin?? so this poses a potential threat to all currencies right? just as much as someone could 51% attack a chain with enough hashing power... anyone could also now bloat the blockchain with enough power / time and kill anyone with small HDD right and ruin the blockchain for that currency?
not really, first you cannot sava arbitrary data to bitcoin transactions (in theory you can, but the nodes will not relay it, so you can't). Also, there is some anti-spamming protection in bitcoin client. And lastly, miners can just ignore the requests if the fees are low enough.
Which will probably happen anyway with namecoin if my way of saving files becomes popular. (people in general don't like illegal data on their disks. also it does not scale at all.)
I am thinking of making some simple GUI to this, though. It is still too complicated with the need to run namecoind from bash and so on
