the keyword position was on first page now dropped out of 300. can you someone help that what would be happened?, it site has been penalized?
I think its not, its just normal. . . wait for 3 days and continue what your doing, if it didn't get back optimize your site. Change your meta tags and content.
Google dance usually happens after you build a lot of links, have you been buildingg links? Do not panic, sit tight and see if you come back naturally after 2-3 days, if not, do some article marketing and link building, if you can find high pr links, even if the main site's pr is high, but the page you link on isnt, this will still work well to boost you back up, one of the biggest mistakes I made in the beggining was freaking out about the Google dance and then doing a bunch of unecessary work....
I went and found this link for ya - http://www.freetrafficsystem.com/google-search-engine-ranking-up-and-down/ hope it helps...