22 February 2005 I have seen an excellent algorithm for a diffs. It is operational on the website where I post my life stories. It simply shows what has been added from a version to another and it does not look too hard to implement. ---> See: http://greenlightwiki.com/cgi/travelwiki/Home_Page. Perhaps doing it for this wiki could help. It's pretty hard to see what has been changed from one version to the next without those trails. And I understand we can only see changes the next day which makes it pretty hard... Anyway have a look at the link above. If there is an interest, I can ask the webmaster the great Ben Kovitz for the algorithm...