MIL - mother in law
FIL - father in law
LQS - local quilt shop
FQ - fat quarter
HST - half square triangle - a square made from two triangles
QST - quarter square triangle - a square made from four triangles
PM - private message
PDA - Personal Diaries and Announcements - a section of this board
TTFN - ta ta for now
I know there are more -