Looking at https://mainnet.decred.org/address/DsVJ7hnsqAuMg8YBDAzGGU4njAatqmdoiwt it looks like several airdrops were all consolidated together into one address. Now, this could be someone buying up large amounts of decred on launch day. But I would imagine that someone who actually went to the trouble of *buying* DCR would then have used it for PoS, or sold a little when the price was high. Instead, it's all sitting there untouched since launch. Looks like someone made multiple accounts and consolidated them all immediately after launch? Not much we can do about it now though. Only option would be to set our PoS votes to prevent any movement of these funds. I don't think getting into blacklisting accounts would be a good idea though! That would set a very dangerous precedence. I was just mapping some transactions and thought it was an interesting pattern!