I haven't paid much attention to the thread. Perhaps I should.
However, one option might be to break it up into several different threads. Post looking for & for trade in each respective thread.
< 51.5 cm frames.
52-53.5 cm frames.
54-56.5 cm frames.
57 to 60 cm frames
> 60.5 cm frames.
Measure middle of bottom bracket to the top of the top tube along the seat tube for classic horizontal bottom top tube bikes.
For sloping top tube bikes, go by the manufacture's size, or measure horizontal distance from middle of seatpost to middle of head tube.
Still, the issue is going back and finding a gem, or someone seeking from months or years before. But, at least new posts will bump the thread (E-Mail).
I try to look at where a person is whenever someone bumps the facilitator's thread.