IMHO, somewhat based on what I saw during my 2 years of training faculty to teach online, you're NOT a newbie by any standard! Any department chair with a grain of common sense would consider the fact that you have years of experience teaching in a traditional environment, plus the fact that you would have experience as an online student, and those factors make you a stronger candidate than those without any teaching or online experience. Add to that experience as a moderator of a respected forum on online education, and maybe publish an article before you apply for online adjunct jobs, along with possibly teaching a class or two at your local community college. Voila- you are now among the strongest group of candidates. It's important to keep in mind that many of those applying for online adjunct jobs (from what I've seen) are doing so based on the impression that they can work in PJ's from their sofas... and do not have any teaching experience... and the pool of qualified applicants shrinks significantly.