I'm not the parent but he's probably referring to the opinion of some that SD is the equivalent of a spammer and its transactions should be blocked. You can find lots of threads on bitcointalk.org discussing it:
https://bitcointalk.org/index.php?topic=150405.0SD notifies losers by sending them a very small transaction. Because of this SD generates the majority of BTC transactions and inflates the size of the generated blocks.
