SEO services ought to be offered by companies that have a vast amount of experience in the different elements involved in the complicated world of SEO. This experience coupled with the close relationship that you ought to have with your SEO company, ensures that any SEO service you pay for do not prove to meaningless and ought to also suggest that your SEO services do not lose focus.
https://www.youtube.com/watch?v=1IQoUM14epk
http://vid.me/Nv36