I build a repo for debian unstable.
At the moment I use the deb-scripts from mandrav (I hope it's ok for you) that come with the source.
The repo is on a home-server so the maximum download-rate is about 200 to 300 kBit for all users.
This is planned to be changed in the future to use a "real" server.
You can put the following line to your "/et/apt/sources.list":
deb http://jens.lody.name/debian/ unstable main
The Release file is self-signed.
To add the my public-key to your trusted key list for apt use the following command:
wget -q http://jens.lody.name/debian/jens.asc -O- | sudo apt-key add -
or download it manually from
http://jens.lody.name/debian/