There are a number of scripts available that animate the Group Role title for your avatar. While no doubt entertaining, these take advantage of a functionality, which was never intended to serve this purpose.  Server side changes which will break Group Tag Animators are going to be rolling out to the grid soon. This change is deliberate: it will sharply restrict the rate at which these updates are allowed. The new limits are generous enough that a human changing things through a viewer should not exceed them, but strict enough to break the 'title animators'.

The current Marketplace products which do this are being removed and the sellers notified.

Image from xkcd