Hi friends my name is Ek Lakh, and i am doing seo work on below given keyword and targeted URL. Keyword - Herbal Remedies for Fibromyalgia URL - http://www.planetayurveda.com/Herbal_Remedies_Fibromyalgia.htm When i started doing work on it, after on page optimization it was coming on 3rd page on google.com. But after doing some bookmarking such as indofeed.com, www.novalet.com, tagza.com, newsmeback.com sites, Social sharing such as facebook, twitter, pinterest and articles submission such as ezinearticles.com, blog submission. This keyword gone down from 3rd page to 6 page in google.com. Now friends tell me what can i do......
You haven't describe that from when you promote this keyword. Don't focus on your main keyword just use keyword variation. For variation you can use keyword tool and Google suggestion tool.
It could be for google dance when you start building backlinks you will face sometimes your keyword will be moved forward sometime backward its called Google Dance my suggestion is as thosino said dot build backlink with one main keywords.Make some variation in you link building and try to use few generic keywords as anchor text and few naked url. so that it will looks natural and you have not get penalty because it will looks more natural. and dont build all backlinks in one day! keep it natural as much as posible hope that will help you
You need to follow rank behavior, when rank go down you need to stop adding new backlinks and wait to get back (most people it this case adding more and more! this is a big fail!), if you'll not you will get penalized. This way Google try to figure out if links are getting naturally. If keywords are at 6 page, there is a small chance to get natural backlink (so dont add new backlinks). Wait till it get back to second page and add new backlinks. This is the safe way to get top 10.