I haven't changed mine in (what seems like) years.
I went through a period a few years ago of obsessively listening to the Yes album "Close To The Edge" several times a day (often back-to-back) for a couple of months.
I also personally felt a bit "Close To The Edge" in my real life dealings at the same time... so I felt that status was fairly apropos.
I changed it then, and haven't felt like changing it since. I usually wait for some obvious inspiration to hit and dictate what my forum "face" is going to be.
So far, that has failed to strike me recently.
Native XWA.Netter (Nutter?)