I guess I am behind on the times. I try to keep up on licenses, like CC and the idealistic cl•sterf•ck that is the GPL v3. The SIL Open Font License snuck past me. It’s a wordy read, but the iconography saved me from my Sesame-Street attention span and a usually unavoidable tl;dr. Fonts offered under the OFL are not very exciting, and mostly focus on scholarly niches and recreating core commercial fonts. Sadly, there are no winners like Calibri, Constantia or the brilliant Corbel but the collection also doesn’t suffer from dafont disease so far.