Negative Margins, Hack or Not?

Question

I\'ve come across various posts where people are stating that negative margins are hacks. Thus I\'ve strayed away from using them with exception to particular cases when I can j

Answer 1

I would argue it's not a hack: It's defined, logical behaviour; it's supported in all browsers; it can be expected to be supported in future versions of browsers (the absence of future support is the most important argument against hacks).

Also, as @durilai points out, they are officially sanctioned (although with limits) by the W3C.

This Smashing Magazine article supports the case.