Dario Andres. upstream bug triager par excellence, has written this comprehensive guide to effective bug triaging:

http://techbase.kde.org/Contribute/Bugsquad/Guide_To_BugTriaging

-- Will Stephenson, KDE Developer, openSUSE Boosters Team SUSE LINUX Products GmbH - Nürnberg - AG Nürnberg - HRB 16746 - GF: Markus Rex