Most hobbyists around me are holding on. Colorado is one of the higher income areas that I have lived in, so that might help with hobbies. Not a lot of folks getting out yet, but I would not be shocked if it is coming soon. Several of the basement fragger/sellers around me shut down their websites and got jobs again and stuff - just sell word of mouth and to repeat customers on occasion.
When you are at your lfs, just ask them if business is OK since you are hearing that things are slowing down. See how they answer. I hope that some areas are doing well.
If you area has GOOD equipment flooding craigslist and marketplaces, then you things are bad. I am talking like best-of-breed skimmers, Tunze stuff (not ATOs), holy-grail lighting (like m80 ballasts and Gieseman fixtures) and stuff like that - the stuff that nobody gets rid of. There is always AquaMaxx skimmers, mp10s, kessils and that kind of stuff out there. I have not seen this yet.