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Linkage is true. Implication is not that important.
Buying accounts in 2013 ≠ Buying accounts in 2017. I think we all know the difference. Most people used to freely engage in account sales before the influx of spam. Even when I had a lending service, I sold accounts. Then I stopped. Because it leads to shit. People are allowed to stop, you know. We're not
all part of the cesspool.
There is a non-zero chance that Lauda has used (and continues to use) his Default Trust status to facilitate these account trading and signature spamming practices.
There's a non-zero chance that everyone in DT has used the status to do X. Why point out obvious facts?
I don't have the time or energy to look further into this now, but Xanis had thousands of posts in the Altcoin sections. I believe that both accounts were being used to scam giveaways.
Find it. Presumptions lead to nothing.