On the thread Half of GitHub Code Unsafe To Use (If You Want Open Source) you can find a recipe to getting rich:
- Post it on Github
- Make everyone think it's free to use.
- Sue everyone you can get your hands on who do.
For instance, the package https://github.com/SublimeText/LaTeXTools has no explicit licence (Berne Convention) and has hundreds of forks on GitHub, and several of them pushed commits to their forks, as we can see on https://github.com/SublimeText/LaTeXTools/network.
So by this project being on GitHub, I am allowed to fork it by the GitHub ToS.
However if I create derivative works from it (pull requests, new commits to my fork, etc.) can Sublime Text prosecute me and everybody by violating the "All rights reserved" copyright granted by Berne Convention law, and start getting rich?
Meaning that, to contribute to that project LaTeXTools is pure danger of getting prosecuted, as I am violating their copyright by adding new commits to my fork?