I have a question for you.... before you buy something these days... do you do what I do and check for online feedback or referrals? If the feedback from someone with actual experience is positive, I am more likely to seriously consider buying the item myself.
If the feedback is overwhelmingly positive from many people, my buying decision gets easier. If the feedback is negative, it helps as well... but only if a clear description of the problem is described and multiple people have experienced the same problem / dissatisfaction.
So... will you be willing to provide feedback to others regarding the books that you've read? Let's face it, making a decision to buy a book isn't only made based on the price of the book, but also on whether it is worth your valuable time to read the book. We're all short on time, so we want to be sure that we aren't wasting our time by reading a book that won't help us.
Where can you post your feedback? For books, amazon.com is likely the most useful place. I'm in Canada, but still chose to read the feedback that is posted on amazon.com rather than one of the Canadian sites. Why? Simply because there tends to be much more feedback on amazon.com than anywhere else.
But, you can still provide feedback on any of the sites that take feedback. Even db2inbooks is a good site to post feedback.
What should you avoid? It won't help anyone if your feedback is negative, but you haven't actually read the book. Yes, it does happen. For instance, my first book had a negative comment made by a reader because of the title. I don't think the reader read a single word of the book, but decided to trash it based on the title alone. Is this fair? Absolutely not. I'm sure most people would disregard this type of feedback, but save yourself some time, if you didn't actually read the book, don't bother posting comments... positive or negative.
If you find errors in the book that aren't very serious but that should be corrected.... I suggest that you contact the author directly if you can. It is near impossible to produce an error-free book. Most of the authors who I work with make it easy for you to reach them. Check in the front of the book... you may find an email address. Also check on ChannelDB2.com as many of our authors are members and would be happy to hear from you.
If you'd rather not contact the author directly... you can always go directly to the publisher... or to me. I'll make sure your comments are sent to the author who can then make the corrections for future iterations of the book.
If you really like reviewing books... and think that you are good at it.... did you know that you may qualify to get free books from the publisher? In some cases we ask people to review the book before it publishes and ask reviewers to provide a comment that may be included on the cover of the book. If this interests you, let me know.
Share your opinion... everyone will appreciate it :)