While the main page is unlikely to be relevant to most [1], i'll note
that the bit on usertagging is quite simple :)
To remove a tag from a user:
bts user gNewSense-dev@nongnu.org , usertags 600339 - libreplanet
To create a tag for a user:
bts user gnewsense-dev@nongnu.org , usertags 600339 + libreplanet
Obviously use your projects email address and tags :)
Debians bugs page [2] is probably still missing the bit on usertags,
but this is a known bug [3], and looks like its almost-but-not-quite
fixed.
[1] http://wiki.gnewsense.org/BugForwarding/LearningResources
[2] http://www.debian.org/Bugs/
[3] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=351746