Just wanted to follow up on my latest experience. I am glad to see more efforts are being put into improving this service. But from a link building perspective, this has done what it said it would do. I moved my money site from the bottom of page 2 on google and bing to #2 on Google (wiki is #1) and to #1 on bing (wiki is #2). So, although there seems to be some piling on with this service as of late, it still rocks from a link building perspective.