Re: 80 OSI Approved licenses
When free (as if freedom) software first became trendy lots of commercial vendors purchased OSI approval for their open source licenses. Plenty of those licenses do not protect the user's freedom and have unpleasant consequences for any developer careless enough to think OSI approval means something more than some kind of conditional access to the source code.
In real life, the important licences are GPL, Mozilla, Apache, BSD/MIT/... and public domain. If a piece of software has a different license, it will probably be easier to find a code base with one of the tried and tested popular licenses rather than finding a lawyer able to understand and explain the consequences of a weird license under every possible legal system in the world.