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by dmm 4835 days ago
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=150405.0

SD 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.