Does Amazon know something I don't

I guess they do, but specifically what do they know about the following.

I log in and view their book recommendations, some good ones on there, but this one puzzles me.

10.		All The Lost Souls (Sep 17, 2007) Average Customer Review: (86) In stock Listen to samples Price: £5.98 56 used & new from £4.60
	I own it Not interested Saved Recommended because you purchased Haig: The Evolution of a Commander (Military Profiles) (Fix this) Please note I have checked not interested- sorry James- but this is promoted as I purchased a book on Haig. Could it be a bit of rhyming slang?