chuck - i've only been on fr for a few months now & have been too embarassed to ask just bttt means - will you indulge me?
bttt = bump to the top (to keep the thread at the top of the most active threads list)
BTTT = "Bump To The Top" aka "btt" aka "bump", and many decorative variations. Pushes a thread to the top of the "recent posts" list.
Bump To The Top
It marks my spot to continue the thread.
:)