Boston used to be very active.  The standard TER page has 25 threads.  Boston's p1 goes back 10 months.  That is an average of 2.5 new threads per month.  Boston used to have about 10 new threads per day.

Those who stay with TER seem to have all migrated to TER General.  It's the last remaining watering hole in the hobbyland dessert, and it's drying up too.