But i am talking about my submit page there is an option on navigation bar there is submit option.which type of keywords i should use
You will be better off starting your own thread as you're hijacking someone else's on a bit of a different topic (even if it was a stupid question to begin with).
Off course it's helpful to increase website ranking in search engine but always take care about keyword density.
Yes i know that keywords are very much important in the website. But my question is what keyword should i use for submit page or shall i use (mydomianname | submit) in the title.
I don't know what else to say, because neither statement makes any sense to me. Perhaps you could explain what they mean please, using different words?
Keyword in content is the most common and necessary thing to do. if we put keyword in content it will help our keyword to get good SERP.
It is the most important thing that needs to be present in your content. All search engines look/scan for the user typed search word in all websites' content. Based on various factors it arranges in a SERP and you get listed..
Ya you must include the keywords in to content. Because the google find the keywords from the content of the pages of any site. And you also set the hyperlink of another page on those keywords.