The psybnc ebuilds (2.3.2.7-r2 or 2.3.2.9-r2) are missing '~ppc' or 'ppc' KEYWORDS. net-irc/psybnc-2.3.2.9-r2 compiles and runs fine on PPC. Reproducible: Always
I have added ~ppc to 2.3.2.9-r2 , since thats the version you have tested.