yeah as it is for a signature you could think about the following.
1. add a extra field to the users
2. make a really small plugin (sounds scary? it isnt!)
2a. the plugin only reads the string from the new extra field (e.g.: var1;var2;var3;var4)
2b. make an array out of that
2c. randomize the array
3. output only one var
that should do the trick... then you would only need one field...
but if you only want some fancy signatures you can check that <marquee> http://de.selfhtml.org/html/text/anzeige/marquee.htm
and also. since everyone could use html in their signature they can add even this to animate or make it more interesting.
