Document the VCS of your packages!
A long story short: have a look at vim's PTS page and try to spot the VCS link at the end of the "General Information" information box.
You like it? Be happy then, since you can have it on your packages too. Just go and add something like the following at the end of the source section of your debian/control:
instead of "Svn" you can actually use "Baz", "Darcs", "CVS", and plenty of others. Oh, and you can of course see the field even with plain apt-cache of course:
zack@aquarium:~$ apt-cache showsrc vim | grep -i vcs X-Vcs-Svn: svn://svn.debian.org/svn/pkg-vim/trunk/packages/vim
The whole point of this is indeed in letting your users know where to find the cutting edge code for your packages, where to look for stuff tagged pending in the BTS and so forth. Be kind to your users, add the field.
- kudos to Dato for pioneering the idea
- kudos to Raphael for timely applying my tiny teeny patch to the PTS implementing this