If like me you maintain a mirror of your main blog and that mirror happens to be a conveniently free wordpress.com account but your main blog is based on MovableType then this might be interesting to you. No doubt you will have already noticed that you can import your MovableType content without any real trouble but did you know that any posts with an ampersand in the title will be duplicated each time you import to WordPress? Alas it is true and I only noticed this evening by accident when mirroring my latest content. So as a rule of thumb, if you intend to mirror MovableType in WordPress don’t use ampersands in the post titles.