Hi My keyword 22th position in Google but suddenly down and nowhere in google ranking.My site is virilityex-penisenlargement.com and keyword is Virility Ex.Plz tell me whta's wrong with this.
It depends on your quality do follow submissions and if your back links are permanent, then it will definitely come back to your previous ranking. Its just like a Google dance.
Suppose you link with junk or irrelevant sites it is also a reason for down your keywords. You want build more quality back links from high quality websites.
It has gone in Google sandbox. Just continue your work and get some good backlinks related to your theme.