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.
It's a Posterous blog, and that's what Posterous blogs do. I agree it's rather dumb. (The giveaway is that annoying-as-hell semi-transparent bar at the bottom.)
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.
What's worse is when your "expand to takeover the entire screen" button looks a lot like a close or X button which as you can imagine would cause some frustration for someone trying to close the image I just enlarged (enlarge again? really?)
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.
I disagree. He's providing feedback to the designer, and his "douchey" criticism communicates his emotional reaction to the design better than any inoffensive feedback could. The designer would rather be exposed to his unfiltered emotions than read a detached analysis of them.