This is blockchain spam. You are sending thousands of 0.000002-0.000006 BTC payments that can hardly be spent (the recipient has to pay minimum fees to spend them too). If Bitcoins were $1000 each these are still fractions of a USD penny. I would be pissed if you sent this crap to my wallet. Only the naive would sign up or expend any effort to receive such payments.
One transaction - 1/10th of a megabyte that has to be stored by every node on the network forever and transmitted to every new user before they can use Bitcoin, you really think that 0.049 BTC is too expensive to do that?
What you call "blockchain spam" is critical for longterm success of Bitcoin. Without miners there is no Bitcoin. And miners rely evermore on tx fees. Bitcoin currently has 8 decimal places. If I want to send a transaction with 1000 payments of 0.00000001 BTC then that must be allowed. And miners will be very happy to process such transactions. Whether or not it is profitable for me to create such transactions is
my business.
"dust" should be welcomed and celebrated. It keeps Bitcoin alive. If Bitcoin software has a problem with "dust" then it has a problem with the future.
