Push two places manually? WTF, presumably Mecurial is feature rich enough that you could automate the whole process of "pushing to 2 places"?

Already ahead of you, B-man. I added a hook to petsc-dev on petsc.cs.iit.edu. Someone should test that it works (by pushing to petsc.cs.iit.edu)

Ok, I need to understand more how bitbucket handles a hierarchy of different repositories with different permissions in different parts and have a hierarchy of managers of the repositories and adding new repositories. I don't want to just have haphazard creation of new repositories without a proper relationship between them.

The question to ask is how does mercurial handle hierarchies of repos? The answer is: unless they share a common ancestor, it doesn't (except for the idea of subrepos).