This has probably been suggested before but can't seem to find any other threads. I think it would be a good idea to create an Exchange forum for B/S/T. Since StumbeUpon got it's self a name, the freebies section is just flooded with exchange threads. It's so hard to find/provide a decent freebie when 9/10 threads are stumble and digg exchanges.
Yes, this has been suggested loads of times before. As soon as a thread about this goes off the first page a new one always seems to pop up. It is a good suggestion but I doubt it will happen unless the owner gets back and approves it. Making a new thread about it every week wont get us anywhere closer to it.