That said, your parent comment isn't really a model of a great comment, either. Probably the current best example for that would be tokenadult (http://news.ycombinator.com/threads?id=tokenadult). He doesn't just dump a pile of links on us with a summary; he puts together very well-composed mini-essays that make individual points, backs up those points with references, and then puts it all together into a cogent conclusion.
You've made two really big claims that are difficult to believe: that Gates has been a net drain on society, and that he has cost the world "trillions" -- a significant portion of the US GDP. That is a lot of money. I quick-skimmed a few of your links and I don't see anything like that in them, mostly just complaints that the Gates Foundation isn't working the way the authors want it to.
Assume that we're all busy here and aren't inclined to sift through a breadcrumb trail of a couple dozen articles around the web to puzzle out how you've come to your conclusion.