AFAIK, all interested parties are supposed to automatically be sent email
notifications whenever anyone posts an update on the review. However,
I've run into a bug <http://psf.upfronthosting.co.za/roundup/meta/issue402>
that seems to be preventing this from working for me.

> * Do all patches go into this review site, or do I have to do something extra to get them to land there?

It should happen automatically, but only if the patch applies cleanly to
the head of the default branch.

> * I have patches for both 2.6 and 3.1 - are they kept separate, or do they affect each other's "delta from patch set"?

If the patch applies cleanly to default (unlikely), I imagine things
could get messy. Most of the time, though, they'll be ignored altogether.