I do not get any money for my reviews, and I will always post my honest thoughts and opinions. I have two different formats for my reviews:
1) Extensive, two-part review: an objective (as far as that's even possible), spoiler-free review, and a second part where I express my personal thoughts and feelings about the book. This part may contain spoilers.
2) More concise review combining objective assessment with some personal thoughts. Usually no spoilers. I use this when I don't think that a spoilery part is necessary for me to vent my personal thoughts that I couldn't include in the review without spoilers.
I will choose between these formats as I see fit. (EDIT: I'm mostly using the second format now - it tends to be long enough...)
At this point, I do not receive many books for review from publishers or authors yet, so I mostly review what I buy and I buy what I'm fairly sure I will enjoy - therefore, the reviews I post will probably be mostly positive ones because I won't waste money on books I think I'm going to hate. However, if I do post a negative review, I will always list my reasons for disliking the book in a respectful way and I will never attack the author personally.
EDIT, November 2014: I am not currently accepting review requests from authors via email. There are so many books, both eARCs and finished copies that I bought myself, lying around my house. I have so many books that I want to read very badly, so unless I have worked with you in the past, I won't be accepting requests or replying to emails. If I feel like I just NEED an ARC of a certain book, I'll take my chances on Netgalley. Now that I've finished my MA degree, I'm back in the blogging game - but I want to find a less stressful way to do it.