hi i rank no1 for about 6 keywords and position 15 to 30 for some other keywords my question is how do i increase the rank of the other keywords... i dont have any space on the site for content so i guess its just anchor keywords and link? correct?
If you are unable to add any more page, I would recommend you leave the site as is. You do not want to jeopardize your sites' ranking by diluting the prominence of your high ranking keywords.