Being as these threads are all the rage these days I thought i'd make one, being as I'm a DiS veteran of 7 years now...or is it 8? I can't remember.
Anyway, you write 'Have you ever *insert something here*?'
Then other people ^this is.
Eg. 'Have you ever parachuted?' Then see how many people this it.
This has the potential to be interesting/hilarious as you'll make up the thing and see if other people have done it rather than asking people to tell us things they may have done.