If you have tens of thousands of readers and a certain SEO simple statistics mean that you will have spammers and individuals who will write what they think & feel.
If a blog entry only gets standing ovantions in the comment section, I usually just skip reading the comments and move on. Much more to read on the interweb. I only have a 30 minute commute and that is the time I dedicate to reading the travel blogs that are out there
