How do you guys know that the traffic is falling? All you can measure is posts and visits. Those could be dwarfed by the number of page hits from people looking up route info from old TRs.
True. Traffic still could be holding because CT has such rich database, but you can measure new contributions and general sentiment and fact is -- it is fraction of what it used to be. This is indication of overall direction which eventually drags out "shadow users" as well.