Gwibber on Debian Sid
Sure would be nice if there were packages... but until then... I've condensed this post by florijan into the following:
# installing depends & version control
sudo aptitude install bzr python-webkit python-dbus python-gtk2 python-notify python-simplejson python-egenix-mxdatetime python-distutils-extra python-feedparser python-mako python-imaging
# check out source with bzr
bzr branch lp:gwibber
# cd into dir where bzr put source / setup files
cd gwibber
# run setup script
sudo python setup.py install
Doesn't appear to add gwibber to the gnome menu by default, so you can launch gwibber from a terminal by typing gwibber, or do the same from alt+F2 prompt. Also, you can add a launcher to the panel that will run this command.
[thanks to clivewagenaar for pointing out python-imaging is also a dependency]