Just as described — if you enter Space 1999 as a search term, in the books area, the search results are ranked — meaning Amazon has internal mechanisms that will govern how close to the top of the returned list a book title will appear based on reviews, sales, etc. So just to be clear, a month ago, if you searched for Space:1999 in books, Born for Adversity was around 33 (you’d have to scroll passed 32 other book titles before you saw it). Now, with the reviews, it’s showing up as the third book.