You said "Of those, 90% are to technorat" OH! #*$!
Don't bother worrying about bleeding PR.
All of my sites bleed PR. It's pretty hard to come start a web site or blog or an existing one that contains a totally new concept.
But there are authorities.
Stay with me, so you link out to these authorities. First step in seo as far as I'm concerned. I have very few complainers from who I have done services for.
I remember Matt Cutts implying it is okee dokee to no follow links on your own site to concentrate PR on a certain page, but out the other side of his neck he says it's wrong to manipulate Page Rank is BAD.
Read up on the forums, link to content no to links!
You said "Of those, 90% are to technorat"