Welcome to the Q&A Forum

May as well kick-start the responses! I'm a Schema fan, it's easy to implement and gives Google and other search engines the information they need. I don't think you need to be too concerned about one over the other so long as your microformat is, in an of itself, correctly implemented. An advantage of using Schema is that you can use Google Webmaster Tool to check your rich snippet so you have confidence to know it's done right. But I'm just one opinion

No worries, once you have decided which one you are after, follow one of these guides: http://www.stateofsearch.com/rel-publisher-explaine-marketers/ http://www.vervesearch.com/blog/seo/how-to-implement-the-relauthor-tag-a-step-by-step-guide/ Best, Stuart