Publicists are tempting bloggers with freebies, just as they've long wooed other travel writers. Will bloggers be nicer if they're not paying? It sure seems possible. Before trusting a blog, see if it's open about conflicts of interest. (Members of the Trusted Travel Blogs Network pledge to be honest; look for its logo.) And scan to see how often readers post comments. A group of watchful readers is a sign that a blogger will be held accountable for doing anything shady.