[sobkas]

First if you don't know what open source is, don't add that phrase to titles at random. Fact that it's launched with YC help doesn't actually help your case. Adding feel good phrase "open source" to benefit hand that feeds you is pathetic. Because right now damage is already done, many people saw and will associate Serra with open source, which it isn't.

Second if you are adding it, add definition you are using(not supported? then someone should implement it). Make sure that definition you are using factually describes license used. Don't use some fringe bs. as your definition, so you can crowbar it in every time you find it convenient.

[dang]

No one "knows" what the meaning of a disputed term is; it's disputed.