I work for a design firm in midtown Manhattan and was hoping this would solve the headaches of IE8 compatibility, but I’ve found that while selecting IE7 compatibility mode from the Tools menu works great, using this meta tag does not.

Specifically when dealing with the “png / black border fade” lightbox problem, setting the browser to compatibility mode manually works great – borders come out nicely faded. However when using this tag – even though IE8 will tell you it’s in compatibility mode, and even grays out the option of selecting compatibility mode, the nasty black borders persist.

Why Microsoft would include a “switch into IE7 mode” that doesn’t fully switch you into a mode you can click yourself is beyond me.