About 3 months ago I built a new site on a 10 year old domain name. I did various link building, social signals etc and was ranking on page 5 for my target keyword. The site was PR3. I then ordered a gig on Fiverr where the vendor adds 100 Google +1s to the page of your choice. The order was delivered and all seemed fine. After about 48 hours though literally all of the +1s were removed. I can only assume that Google detected that the profiles used were fake/bots. It also probably wasn't smart that the person doing this blasted them all on in about 10 minutes instead of drip feeding them over a couple of weeks. Anyway, no big deal wasting $5 of course. Who cares? But then I noticed that the web page in question also fell from page 5 of Google (where it had been for weeks) to page 14! Now that I am bothered about! Has anyone else experienced this? I suppose it could be a coincidence but I doubt it. The drop in SERPS corresponded exactly with the +1s disappearing from my site. This also has negative SEO implications as well of course. Apparently if someone blasts your site with +1s from fake Google+ profiles at high velocity, Google will punish you. If I dropped from page 5 to page 14 on an aged domain because of only 100 +1s, just think what would happen if someone hit it with thousands. It seems it could be far worse than someone hitting you with spammy backlinks.