What are your experiences using sites like addmefast to increase your site social signals as far as rankings is concerned ? I was out of SEO game for almost 1 year, and last month I started experimenting again. I used social signals as part of one client campaign but I can't be sure if they helped or not cause at the same period I made a lot of other various backlinks (wikipedia backlink, high pr blog comments, web 2.0 backlinks etc). So my question is have you seen ranking increase just by social signals of services like addmefast? Of course there are a lot of case studies that show the results of social signals on rankings but what about the crappy social signals from fake accounts that you get from sites like addmefast.