I think we should remove the people.canonical.com/~herb/ tarball.
1) It's of db-devel, not devel. Not what a beginner developer wants.
2) It's a standalone tree, not a shared repository plus branch, as is
customary for LP development.
3) It's badly affected by early 2a fragmentation, a modern bzr version
packs that repository down from 219MB to 150MB.
4) It ships a working tree, if the goal is to minimize download size,
that's counterproductive.
5) It's sufficiently out of date at this point that you still have ~25MB
to pull it up to date.
Alternatively we could rectify all of the above and republish it.