diversifying backlinks

Which methods do you use for disversify your backlinks?
You just take a look on the pagerank?
Or do you disversify more with assumptions of the trustlink?

And can you really build high class backlinks with blackhat?



For example: I have 1000 Blog comments on PR3 domains but always URL PR0-PR1 sites.
Also i have 4000 xrumer profile backlinks with PR0 but there is a funnel to this backlinks (30k BL on 16k backlinks on 4k backlinks). But still PR0...

I created some forum postings on PR9 forums but just found URL PR0 sites.

So if i just go for PR i definitly need now some URL high PR backlinks.

What are you recommending?

Diversify your links by building backlinks from different sources: blog comments, forum profiles, forum signatures, articles, 2.0 sites, press releases, etc.

Also, diversity the type of link you do -- different anchor text, some with and some without anchor text.

And diversity what pages in your site the links point to.