Is there any point in having medium-grey text on a slightly lighter grey backgound, other than to make it very hard to read? http://contrastrebellion.com/
First rule of producing good content:
1. Make sure people can read it.
And speaking of readability, there are still too many sites that break if a user resizes the browser font size (done with CTRL-+ or an analogous Apple command on most browsers), although that is not a problem with the site kindly submitted here to open this thread.
A point made in the article is important to me as well... there are times when zooming on my phone is important too, and sites/apps that disable this ability make it painful.. I tend to make the initial size device with, and limit scaling to 1-2x, which is generally enough. I wish that more people paid attention to scaling, especially given higher pixel displays on the horizon, and already in mobile devices.
Older browsers used to just resize the font inline, and leave other elements alone, but most modern browsers resize everything these days when you use those commands, so sites shouldn't look any different when scaled up or down. It's been this way for a long time, it seems.