[mr_justin]

Standard lightbox image technique, pretty nice once you get used to it. Click image to expand, click almost anywhere to collapse.

[robtoo]

That's the standard lightbox convention for a left-click. The grandparent was talking about a middle-click.

There is an established convention for middle-clicking a lightbox thumbnail (open the larger image in a new tab), which posterous apparently breaks.

[pkamb]

Middle click should never ever do fucking anything other than open the link in a new background tab.

[jodrellblank]

Just another instance of my computer working for anyone other than me.

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.