In reply to Google's Roboto font for Android:
"Another thing I don't get: Android is a mobile platform. Bandwidth is a concern. Roboto-Medium is 157 kb. Wow."
Of what concern is the size of a UI font when it comes to bandwidth? You're not downloading it, it's already on the phone. (Unless you're using it as a webfont, but there are much better fonts to choose from if you're going that route, unless you insist on open source fonts, in which case there is no help for you.)
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I hate it primarily because the name sounds like something from 2002 Free Fonts.
