Ahahah, it's amazing.<p>Agreeing with other comment, having a quota to use would seem like a better thing. You could spread it over time or over multiple people.
Chances are that after the first few noodz the target is going to block the number.<p>Even better yet : offer a fake/proxy number for people to get rid of the ones that do not take no for an answer and reply with only noodz ;)
I like this, but I'd prefer something like $1 for 5 times over 10 hours or something. Like, I don't want to drive them nuts for an hour, but an occasional "lol wtf?" would be fine for laughs.<p>An hour seems.. annoying, in a bad way.