I have a new site, just under a week old and it has hit on page 1 for my initial keywords. The google webmaster tools suggest it has 4 out of the 7 pages in the index, at what frequency would you suggest I add further content. I probably have another 5-10 pages of related content I've planned and could probably add a similar amount of other content if I put my mind to it. I don't want to run up too much content too quickly and look like a spam site. Any suggestions?