How to Troubleshoot Dropped Search Engine Rankings?
Revive your Dropped Search Engine Rankings
Dropped Search Engine Rankings could be caused by many things. Check your host for downtimes, search engines will drop your rankings if it is consistently down during their visits. Have you transferred to another site host? If yes, chances are your site may have been down during the search engines visit. Don�t worry about such incidents as rankings will be back to normal after re-indexing of the search engines.
Your site may have been mistakenly identified as a spam. Search engines can penalize you with dropped search engine rankings for signs of offenses. You have to identify the offensive portion and remove it.