I've noticed some rotating signatures here.  What I mean by that is I've noticed some members, such as Sailor Uranus, have two signatures, and each time they post, they either rotate between the two or one of the two is randomly selected by the server.

What I'd like to know is whether this is something I could set up in my Profile here.  And if so, how would I do so?

To get a rotating signature you need to go to a rotating siggie host site ^^ I use signavatar.com and you basically just upload the signatures you want it to rotate through and then it will give you a link that you put where your signature would go and bada bing bada boom! Rotating siggie