1. Regarding the 1st link - Speaking from experience, if you do business in certain (primarily third-world) countries, bribery is the norm. It's as natural there as lobbying is in the US.

2. Regarding the 2nd link - MS has no control over IV's business, unless you have evidence otherwise. And that too, it's "unclean" only to the extent that you believe patents are evil, which is unfortunately an all-too-common view around here.

3. Regarding the 3rd link - see 1.