Re: 100 or more links on a page
Pagerank does not "bleed" - When a page passes pagerank to its links, it also retains it's original pagerank. Confusing at first I know, but here is how it works.
Page A Has 100 weight points (We are choosing .85 as an arbitrary dampening factor in the algo) Thus it can pass on 85 weight points (Technically 85.15 but we dont care about the .15 at this point)
If page A has one link on it, it will pass 85 weight points to the page it links to.
If page A has ten links on it, it will pass 8.5 weight points to each.
In either situation after linking out page A still retains it's 100 weight points after the link out.
This is a function of the Prt1/Ct1 in the algorithm Where Prt1 = 100 (the weight the page has) and Ct1 = the # of outbound links on that page.
What you do lose is the opportunity to pass as much weight to your internal pages from that page with 100 weight points, but lets be honest, you pretty much write off the PR of your links pages when you create them anyways as they are meant to donate what they have to others, in hopes that others are of like mind.
Starting LEC 7 soon but it won't be called LEC 7 - LEC 2012 coming soon!