
Don't forget /opt
A lot of software likes to install itself by default there. However, per Karsten's docs (I think I remember this) you can just create a link from /usr/local.
Tom Sinclair
"Subverting Young Minds Since 03/13/2000"
Daggy stepped forward, but only comparatively; in fact, his mates had all,
without discussion, taken one step backwards in the choreography of
caution.
-- (Terry Pratchett, The Last Continent)