Organic Fertilizers

Interesting reading here on organic ferts.

Nice post.

hmmm, link seems to be dead

hmm, you are correct, I have no idea what happened to it either. However there is ALOT of interesting reading over there, heres a few more I was looking at and found useful, all on soil:

http://www.ext.colostate.edu/pubs/crops/00534.PDF
http://www.ext.colostate.edu/pubs/crops/00502.PDF
http://www.ext.colostate.edu/pubs/crops/00512.PDF

Pros
addition of benefical compounds buffer pH, and much improve the aroma, flavor, and resin.

Cons
difficult to ascertain exact amounts of required nutrients present and wide ph fluctuations.