(I could only think of four)
2. Amazon/B&N - helps me find the new up-coming releases
3. Publishers - without them, I wouldn't get so many amazing ARCs to review on here
4. Various blog meme's - helps me to post every day and every week when I don't have anything else to post
5. The Library - even though my library is quite small and barely has a YA section to look through, they are still very helpful and usually order the books that I request.