"Do you have a system as to which books to read from your “requested review pile? What is it? What about when there are too many to read in a certain time frame?"
When I receive a book to review I write on a sticky note who I received the book from and when the review is due. I then put my review books in order of review due date. This is usually the order I read them in.
The books that don't have a specific review date go in a pile and have the date received written on the note. I fit these in between the books with specific review dates.
I also have an agenda that I use for all things: appts, events, practices, book reviews, drawings, giveaway hops etc. I highlight everything book related in pink so I can schedule reviews without getting super piled up. I keep a running list in the notes section for the month and mark that book when I read it and then again when the review is written and scheduled for posting.
I also make sure to only request or accept books that I think look interesting and will enjoy reading. I hate wasting precious reading time on a book I don't like or isn't in my "niche". I also don't think it is fair to the author to review a book I know I probably won't like and therefore not give a very good rating.
I only just recently started requesting review books and accepting requests and I knew I'd need a system to keep it organized. So far I'm doing pretty well and am reading about 2 weeks ahead. I can enjoy the books better this way.