Falling Pagerank

You aswered to a part of the problem : 301 redirect from your homepages or your non-www to www is a way to make all Google classification come together. Here's a nice tool to get other answers about your page crawling by search engine : Websitegrader.

Another thing about GG Pagerank is that falling from 1 point could come from things which don't matter your content change : inbound links decrease, inbound link Pagerank decrease. Lots of people says "links, links, links !!!" but sometime a good link strategy may also give a better impact than indexing your website everywhere : choose your referring, check their PR, check if they are in the same subject,... and all this thing will bring your Juice better and consequence on your PR !

I would like to answer my own question - sort of.

My pagerank did not actually fall from a 5 to 4. I was actually looking at www.myhomepage.com/index.cfm. Which, with the extra "/index.cmf" the pagerank was a 4.

Thus, would it be smart for me to get rid of the link I clicked that redirected me to my homepage with the extra "/index.cmf"? Also shouldn't I 301 redirect all of me default homepages to point to my domain using the syntax "http://www.myhomepage.com"?