A Question for You: Why Do Authors and Publishers

giveaway books on blogs? ???????????? That's question # 1-

I usually do most of the talking here. Most of you read and post occasionally. But this time I want you to do the writing.

More questions for you:

2-Have you won a book on a blog?
3-If you did, what did you do with that book?

4-Do you only visit blogs that give books away regularly?
5-Or are there some blogs you visit or read often? If so, why?

6-Please list any blogs you especially enjoy and visit often. Please give their URL or Web addres...