For example, today I just finished reading The Trials of Apollo: The Dark Prophecy (I'm gonna write up a full review on my review site later), and I loved it. It was released yesterday (May 2nd) but because I pre-order certain books, I got to start reading it Monday night. And I didn't really want to put it down.
I've always had a love for fantasy books, but certain subject matters grab my attention more than others. For example, my love for mythologies has me devouring Rick Riordan's books like a starving man at Hometown Buffet. I've also tagged Neil Gaiman's books as must reads. Any book that hints of Arthurian Magic will most likely enter my TBR list quickly as well (i.e. Harry Potter, Mists of Avalon, Dark is Rising Sequence).
On the flip-side, there are certain things that will keep me, personally, for starting a series. A big one is book length. Because my husband loves them, we own all of the Sword of Truth books and the Wheel of Time books. However, I have not yet been convinced to delve into a series where the shortest book is more than 225,000 words. Sorry, I just can't manage it. I'm not saying I'll never do it, but I just don't have the attention span for it at the moment.
My position on reading and recommending books is pretty standard. If you liked the book, leave a review. Now it might take me a while to get around to writing said review (I read a lot of books, so that translates to a lot of reviews), but eventually a review will get written. And this is necessary. Why? Well there are two reasons.
First of all, if you like a book, you want other people to be entertained by it too, right? When was the last time you heard someone talking about a restaurant that you love and you didn't immediately think "Oh, I love their (insert desired dish here)!" It is natural. Well, that is what a review does for books. It is a personal recommendation for a great experience.
Secondly, retailers need to know whether certain authors should be promoted more aggressively. If an author has only a few reviews of their books on a retail site, they are not going to be promoted the same as an author that has 100+ reviews. Even if the few reviews the first author has are all five-stars versus the 100 three-star reviews of the second author. The second author is still getting reviewed.
That is why I am so solid on my point. If I read and like your book, I will recommend (review) it for other readers. I can only hope that my readers will do the same for me.