Being a nurse myself, I think there should be plenty of concerns gay men should have. I think with the growing rise of MRSA and other diseases, care should be taken to keep the gyms sanitary and free of acts where body fluid is left behind. It is just really irresponsibe to others at the gym to have to worry about catching something in the shower or sauna. Alot of those warm places become a dish for bacteria to grow. I'm very careful about where I put my hands at the gym, definitely do not touch my face ever, and would certainly wear flip flops to shower. I've also witnessed so many people coming into the bathroom, going straight to the bathroom without washing their hands. Remember, everyone that has touched that equipment has now touched you private parts. Wash before and after.
As our subculture becomes more and more sexually active, I could also see having some gay support groups for people struggling with sex addiction. It's very easy to get caught up on line and break into a pattern of meeting person after person for random hook ups. It seems harmless until you can't stop doing it. More often than not the younger generation is now participating in unsafe sex, we need to get on the wagon to start promoting safe sex again in our communicty.