I think the naming is more related to historic development: my original implementation just had one tab named "Configurations".
Esteban later added "Untrusted" since these are the ones that are not (yet) tested in the according Pharo version. It's a nice addition since it makes them easily accessible as well. However I now changed the tab names to "Core" and "Community" in http://code.google.com/p/pharo/issues/detail?id=7154 Reminder: ========= It is still required that people try out the "Community" ones and if they are working fine in Pharo 2.0 copy them to http://ss3.gemstone.com/ss/MetaRepoForPharo20 so they appear in "Core" There is lots of nice stuff out there (distributed in various repositories, posts, ...) and it only makes sense if people know about it from a central place and have easy "loading" access to it right from the image... Thx T.
