[Pete C]

noppid, your changes work well in Firefox, but a substantial percentage of my visitors are still using IE (IE6 & 7). Viewing it in IE, the message either appears at the bottom of the board (depending on the style in use) or it remains at the top but still disappears when scrolling down.

You are quite correct about the search engines picking it up of course, and it would have been an excellent tweak to prevent that. I'm now using your CSS changes noppid, but leaving the code in the header due to the probs it causes in the footer. It's a reasonable compromise for both Firefox & IE users, although it's not going to help with the indexing. I guess it's still a trade-off as to whether folks sign up when they get there.