In my site google seems to index categories although I never specifically link to a category - how is that possible such that I can stop it?
This link was never created by me: http://www.website.com/50-categoryname and I want it gone from google for good please.
Thanks,
Mat
Even though you think you have never linked the category most likely you have such as by having the category name display in a list or part of a module. Go to configuration fr all your content types and make sure that display/link category and parent category is turned to off and check all modules. Also make sure you don't have any categories links and that you aren't using a sitemap that generates these links automatically (linking to all the top level categories and letting the map build through all of the child categories is the quickest way to generate a site map).
You should hide these links from search engines. You can do it in your robots.txt file like this:
Disallow: /50-categoryname
Also take a look at Joomla's Redirect Manager - may it will help you to redirect incorrect links to needed pages.