my website is not ranking from last 6 months

[guinanie]

checked if your site is penalized or banned. There is a fluctuation of keywords because google algorithm changes, data refresh in data center and index updated . Or you may read article on this link http://www.mattcutts.com/blog/explainin ... refreshes/

[dee_el07]

Resubmit your site to the directores and get some good backlinks to your sites that should be related to ur site.

Maybe you can resubmit your site if its not yet listed to those particular directory site..