Hello, I got a mate of mine that has contract an outsource company to make the SEO, the company is from US and he is in Portugal, the thing is that the company sends him screenshots of the keywords they are positionaning for him on Google Portugal (google.pt) and they are show on the 7 page of Google ranking 76 to be exact, but when he checks it out like two hours later or something those same words appear to him on the page 53 position 536 to be exact or even more in some cases does not appear on raking. The company says that is supposly for something called Google Dance, really? is that true at all? Because for me it does not make any sense how in 2 hours or less the ranking can change from position 53 to 536, It makes sense that your ranking changes maybe 20 positions up or down but, 500 seems to much for me. Can someone please explain me what is happenning because my friend its been with this company doing SEO for 3 months and he is feeling really rip off and I would like to explain him what is really going on. Cheers!