Our site is http://www.workfromhomewisdom.com and we have a sidebar link to a free download and to "tell a friend". These are accessible if the user navigates to any of the pages or blog posts.
However, if the visitor navigates via the tag or category links, clicking on the sidebar buttons take them to a 404 page. This is because the link to the category/tag is inserted before the button link!
I am not a proficient coder so not sure if it is my coding, the theme (Mystique) or the settings for my blog that is causing the problem.
Some expertise would be greatly appreciated - discovered the problem when I signed up to Google Webmaster Tools - something I would advise everyone to do as it catches those hard to find broken internal links, 404 problems, gives you lots of useful SEO information and Google like you more!
Many thanks
Andy