Bots for doing useful things in wikis.

Pricebot updates exchange rates and crude oil prices in a wiki. Read more about it at http://www.subsurfwiki.org/wiki/User:Pricebot

Linknet creates a DL file containing the edges in a graph of wiki pages, to show how they're linked. Visualize in Gephi.

Catedit edits the pages in a category.

Patrol checks new pages for certain criteria and returns a reverse-ranked list of pages. In early development.

Ideas welcome!