> Permission is hereby granted by the authors of this software, to any person
Person as in what, a natural person? What about non persons such as legal entities? > and including usage rights to any patents the authors may hold on it
So the license allows you to use any patents (held by the project author) included in the project, but it doesn't cover anything about patents used by contributors when submitting changes. OK... > Any modification to the software submitted to the authors may be incorporated into the software
> under the terms of this license.
May? That seems like something that should really be changed to "Any modification to the software submitted [...] will be incorporated into [...]" or something similar that _doesn't_ let people decide about this on the fly.This license as a whole is rather vague, leaving a lot up to interpretation. This isn't something you want from the only thing that stands between you and a potential legal nightmare. Just use good existing licenses such as the MPL 2.0, Apache, GPL (or some flavour of it), or even the MIT license (though I would strongly recommend not using it without a CLA).