Looks like they are trying to cover their tracks. The footer with the address to 49dollarmontanaregisteredagent is now gone.

https://web.archive.org/web/20160214011252/https://www.poloniex.com/

OK I think I get it. Poloniex's registered agent was using 49dollarmontanaregisteredagent as a registered agent.

That makes it way less shady. /s

They moved = they were using them as a registered agent? Brilliant way to connect the dots.