I say with these wristbands the same thing that I tell people about ribbons when asked. I simply tell them that as a member of the human race you can assume that I support things like cancer research, AIDS awareness, etc. To think that only the people who wear things - ahem - out on their sleeves - truly support humanitarian works is frankly insulting.
Maybe make people like ADHDisBogus wear a wristband showing their LACK of ADHD support! Then we'll spot them on the street and help them "understand" our side of it properly. Think about it - most of history shows us it's easiest to see the bad part of the world by what you wear than without it - examples: KKK - (white hoods) Nazi party - (swastika armband), michael jackson - (detachable nose, chin).