Sending out STD's?

For those of you that have mailed out STD magnets, did you have any problems with people not receiving them? I saw on a website a while back that magnets are not good to mail because they stick to things and tend to get lost in shippment. Has this happened to anyone?

Their suggestion was to send STD post cards, but I have my heart set on the magnets.

most of the ones i've seen aren't your normal, heavy duty, sticks through a thunderstorm magnet...they are usually thinner and light and i can't imagine them sticking to much once wrapped inside a card and an envelope.

i think you'd have to have a strong one and by luck it get put on top of a metal container that is wrapped in super thin paper that for some reason the USPS allowed to be shipped with letters. in other words, too many crazy possiblities in order for this fear to stop you...and people do them all the time!

I have a friend of mine that we just recieved her STD magnets (they are bigger and stronger than most I have seen) and we received them no problem...