The post acts as if the idea is really new (some article is said to have introduced the idea "one week ago") but I have seen this in practice at least months ag

The post acts as if the idea is really new (some article is said to have introduced the idea "one week ago") but I have seen this in practice at least months ago. It’s not a new idea. But there are reasons it hasn’t taken off like crazy. There are still serious disadvantages to (ad least the obvious implementations of) the technique, as powerful as it is when it works right. Others on this page mention drawbacks. Not the least of which: It’s not super easy to make a font with just-right glyphs; you cannot guarantee that no users don’t see or hear letters instead of images or alt-text (ooh! anybody remember our blind/accessible users?). So until I see a post that examines and solves all the potential issues with icon fonts, I have to stay away. As pointed out below, this blog post is over a year old. Oops.