The number 1 site in my niche has a few dozen domains each consisting of a very simple 1 page - something like that: <HTML><HEAD> <META NAME="description" content="--"> <META NAME="keywords" content="--"> <TITLE>some title</TITLE> </HEAD> <FRAMESET ROWS="100%,*" BORDER="0" FRAMEBORDER="0"> <FRAME SRC="http://The number 1 site" SCROLLING="AUTO" NAME="bannerframe" NORESIZE> </FRAMESET> <NOFRAMES> some text <P> <DIV ALIGN="CENTER"><A HREF="http://the number1 site">http:// one of the many domain names /</A></DIV> </NOFRAMES> </HTML> To be more clear you see the number 1 site's home page . All of those domain have some PR -3-4-5 achieved by heavily spamming guestbooks , forums , blogs etc . Question is - does that technique really help them be on top, or at least it doesn't seem to hurt at all. The competition is not too fierce - about 4 500 000 results in google. So is that just a way of improving PR as there's no anchor text pointing to the site number one , however keywords are relevant? Or does it affect their ranking? Any comment would be very much appreciated