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Forum Moderators: mademetop
Instead of changing the page title to try to have improvements on certain keywords, perhaps work on adding content about those phrases on your index page. Add links (with appropriate anchor text) to internal pages with relevant content and external links.
Moral of the story, if you have a site that hasn't changed for a long time, be careful with how much of the text you change. I'd tweak main pages very little and add additional pages that the search engines can find which are focused on the other topics you want to emphasize.
PS:- If someone agree then do comment against my post and if someone not he or she must put their opinion.
does this index.html page count as a content page.
We may have just over-optimized for that term in Google's eyes.
If you change your title, google and other search engines will consume some time to reflect rankings for new titles.
However you should make sure that you do not change your titles too frequently, otherwise you could risk loosing rankings as well.