Hopefully this is the correct place to report this.
From this page:
There are a number of RSS feeds listed: "The front page", "Robot projects", "Tips/walkthroughs", "Forum topics", and "Blogs".
The page that the first one -- "The front page" -- links to works. (I.e., it send you to an RSS feed.) None of the rest of them -- none of the other 4 -- work though. The remaining 4 all send you to an HTML page.