Conclusion:
* Reader has to be free (ORLY?)
* Reader should be under development (last SVN update <=1,5 years?)
* Reader could have proprietary dependencies like libs, or not?
In my opinion Skim is ok, as the libs are installed in any case if you use Mac OS. If you would have to install proprietary software to be able to use a reader, then we should deny it.
Is that OK for everybody?
HennR