Already exists. Go to ?action=history and look at the sidebar. :)

On 12/03/07, Titoxd at Wikimedia http://lists.wikimedia.org/mailman/listinfo/wikitech-l <titoxd.wikimedia at gmail.com http://lists.wikimedia.org/mailman/listinfo/wikitech-l > wrote:

Some pseudocode (someone who knows what they are doing should probably fix it :P):

Not on watchlists, but on pages - would something that would give an RSS feed of the history if you added "?action=rss" cause the servers to melt? Shirley not (cross fingers).

- d.