So being the nerd that I am - I tried it on my own books. Well With My Soul has one of my brothers making his big break in that page. He always wanted to be in a Broadway show and on page 99, he is in rehearsal for it. So it plays to the theme of the book. I was thinking "not bad, Greg."
Then I tried Patchwork of Me. Perfect! Page 99, Sara discovers a huge part of her past and why she has the invisible rash.
There is an online site where authors can upload the page for others to read, but for my author friends out there...I say test yourself. Do you find that page interesting? Does it grab you and cause someone to want to buy your book? Is it saying anything of importance to your reader?
Just thought I'd pass along the info and enjoy testing your own books or those books you browse through the next time you go into a store.