This is incredibly common.  It doesn't mean anything bad.  All states require that a corporation list an agent with a physical address in the same state that is capable of accepting legal process.  Because of this, all states have companies and/or people that act as registered agents for various fees.  States with favorable corporate laws (Nevada, Delaware, North Dakota, etc) have tons of these agents.

Apparently it is a huge secret, because at least once a month I hear someone just learning about it and talking like they think it is evidence of something sinister.