I don't really follow individual authors, but I'd be interested in being able to follow the market of "books like A Song of Fire and Ice/Fooled by Randomness".

I don't really follow individual authors, but I'd be interested in being able to follow the market of "books like A Song of Fire and Ice/Fooled by Randomness". The market for related books might be much hotter for you and lead to more conversions, if you could figure out a way to figure out similar books.