Proper documentation will come later. For now, to hack on the web interface:

git clone --recursive git://github.com/CyberShadow/DFeed.git
cd DFeed
mkdir data
sqlite3 data/dfeed.s3db < schema.sql
echo 80>data/web.txt
echo localhost>>data/web.txt
rdmd nntpdownload
rdmd dfeed_web

nntpdownload will download messages from the NNTP server and save them in the DB. This will need to be done once. After starting dfeed_web, you should be able to access the web interface on http://localhost/.