Well, at least my name is going to Mars. I always love these - sending something in some form or fashion on a spacecraft is just cool. I'm not sure exactly why... maybe it's the nostaligia my Dad created when he woke me up at five in the morning to watch the shuttle launches on TV when I was growing up... or the open houses at JPL... maybe it's just a general love of space... or maybe it's to reaffirm my supreme geekness. I think my name has been carried by every spacecraft since they started it.
I love that it's non intrusive, just a name and now a zip code. Does it build a community? I think it does. And it doesn't make me feel like I'm going to get junk mailed because of it.
Send your name!