No warning?

[Chad]

just because your chances are small doesn't mean you should not be informed.

Sticking your hand in the tank opens up a world of infectious posibilities.

I see nothing wrong with a responsible employee providing legitimate information to potential buyers. These warnings are not there to scare people away, but to inform and teach proper handling and husbandry practices. When given in that context, it becomes very valuable information.

[Samw]

I don't wear gloves when I work on my tank. This weekend, I did a lot of work on the tank and I touched a lot of liverock and coral. Usually, I'll get a few allergic reactions from acros when I scrape them with my forearm. This time it happened again but I also felt some tingling on one finger (on the hand that I used to move liverock around). Later in the day, I had some tingling in my chest. I thought, "ah crap, something must have stung me". I sometimes get some tingling or feel a bit sick after I aquascape my tank (and I've read others do as well). Luckily, it only lasted 3/4 of a day before the tingling pain in my chest went away. Certainly, I was a bit anxious and thoughts of what am I going to do if this gets worse ran through my mind as I went to sleep.