hi Q1:what's the meaning of deep links ? what advantages , disadvantages? Q2:what's the meaning of dig pr & what's the difference between it and the basic pr?
Deep links are links to internal pages on your site....vs. regular links that only point to your home page. Deep links are very beneficial and important. If a site only has links pointing towards its home page, then the internal pages will likely fall into the supplemental index. I shoot for a 2 to 1 ratio usually...If I am getting 3 in bound links I will point 2 towards internal pages and 1 to the homepage. As far as your second question...I'm not sure what you mean when you refer to dig pr.
He probably means digpagerank http://www.digpagerank.com/ . It shows you page rank from various DCs. Only useful when PR Update is on the way.