Thanks, Kathleen. I can't really answer your questions since I am just a humble physician with little to no ability or interest in controlling the technical aspects of the blog, as long as it does what I want it to. Yes, I really like DISQUS as well, but I have no idea whether it would interface with the Drupal platform. Since this blog is one part of the larger Carilion Clinic website, I can't just arbitrarily choose to construct the blog in ways that might not be compatible. Hence, I am leaving the technical aspects to the experts. Regarding SEO, I really just try to pay attention to keywords that readers who come to the blog via search tend to use. IF appropriate I try to work those into my titles, categories or headlines.