XKCD on password security.
http://xkcd.com/936/

Last pass has a password audit feature that shows you where you're using the same password.

My family is from South America you insensitive clod! Now excuse me while I go introduce Sally Struthers to the tribe and give them some shiny beads to keep them from eating her and to swap for their land.

Unfortunately, Wave tried to bolt a poorly executed social aspect onto a messaging system, meaning everything but messaging sucked. This bolts messaging onto a social network that already has messaging built into it.

No one wants an oil well in their back yard until we are all screaming for oil to lubricate the gears off the economy. That sentiment will change.

One thing you may have noticed is that humans are good at ignoring a problem until it forces them to adapt. New technologies are good and all, but alternatives are just another thing people will have to buy to get around the shortage. That's money many won't have once prices rise due to a crunch in a critically important resource. Cripes we're already complaining about the rise in coffee prices. Everything made of plastics or wrapped in them will also rise in price, making a very personal crunch in resources for everyone.

'm gonna make a big leap of faith here, but I think that video is not to scale. The gap you see between the third blue dot and some of those other dots are on what we like to call "a planetary scale". And they have hit us before!

This is akin to, once you've done the thing that the picture depicts, it can't really be undone.
So the real lesson is, don't do stupid shit in the first place.
Putting that into practice is, of course, slightly more difficult than saying it.

Green Wave not to be confused with the same class of phenomena as the Red Tide or Aunt Flo visiting.

Actually, I'm researching the Irish Potato Famine at the moment. Thanks for the tip!