It doesn't work for me. First I tried to install it on a French site, but it didn't have a French language file. Not a problem, so it said it was going to use English instead. But I never got to display any kind of sitemap. I assume you publish the component in the main menu? It just gave me a blank page, and on an English language site it gave me the correct title "Sitemap" but no sitemap was displayed. When I wanted to go back in the backend to try to play with the settings I wasn't able to because again I get a blank page.
Oh well.
