http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4083134/#__sec4titleThis is the post I've been waiting for; thanks for the input, Hackworth.
What kind of environment do you think would stress these ancient viruses enough to develop hundreds (and thousands) of genes, versus the simple genetic composition of modern viruses?
Heres a couple of examples of what that large genome codes for
also I was wrong giant/mimiviruses being benign to humans
they have been linked to pneumonia in humans, apparently giant-virus infected amoeba (which can cause pneumonia) are resistant to disinfectant and are found everywhere, and can be pathogenic