Keeping track of website updates (Arevenca/Madasi, Derwick, Ovarb)

One fun thing I like to do is watch when web pages are changed or removed. As I look into possibly untoward behaviour in the oil industry, I keep coming across situations where information disappears from the Internet. I give you three recent examples. Each one is minor, and I don’t want to speculate on people’s motives. I have no problem with privacy. I just don’t like memory holes, where information of public value was public and then disappears. So I am preserving and pointing out a few tidbits.