Gsa ser engines just launched serengines which is a monthly service for better Web 2.0 backlinks for gsa ser. I watched the video and was impressed. I wanted to know what do you guys think of it, is it worth $15/ month for limited time? Would it be better to get Ultimate demon? If you do the math serengines would cost more over two years than ultimate demon would which is a factor to consider, even though it is less than senuke xcr, magic submitter, etc.