Invisible Pages?

Continuing with Monday, Monday, I built a database of all pages in my About.com material (aka Welcome to 'Chess for All Ages', because it was named after this blog) along with their links to other pages. I checked that all pages were linked from another page, fixed a few technical inconsistencies that didn't affect page displays, and found two unlinked pages. It turned out I had documented both on this blog:-

• Page: Chess Opening Fundamentals, Post: A Note to Myself on Openings
• Page: MPR-BLOG, Post: This Post Will NOT Interest You!

While I was doing this, I noticed a few other links that didn't look quite right. I'll come back to these ASAP.