Not just a piece of synchrography for us, Jackanory, but we linked to exactly the same web-page! I must create a new word for that and think I'll go for one based on Latin root-words this time rather than the Greek of 'synchrography'. How about 'simulpagination'?
I was loking for something specifically relating to pages, Boyo. 'Serentypity' I like as a word, but it seems to be connected with the process of keyboarding itself rather than page-agreement...ie it's a variant of synchrography. Cheers