You know what's goddamn terrible? When you design your site so that middle-clicking on an image doesn't open the full-size one in a new tab, it just shits all over the current tab.
Sidenote: Quora appears to have the same problem; I'm guessing it's something capturing click events and calling e.preventDefault() on everything instead of on just left-click events.
See anyone can be a sensationalist Internet douche!
Remember just because you're self-aware and apologize ahead of time doesn't make what you're about to do ... any better or less offensive. I would even argue that it makes it more.
There is an established convention for middle-clicking a lightbox thumbnail (open the larger image in a new tab), which posterous apparently breaks.
They're right, it is a Post-PC era.
It's not a personal computer, it's anybodys computer handing over control to anyone and everyone and hiding or removing it from me.
I don't have a witty name for the Era yet.