Is there a program that can send me an email/sms message when a site I am sending traffic to goes down?
idiot.
Do you even think before posting? Either you got a project that no one cares about which doesn't need monitoring, or, you know, you actually make some decent money or need to monitor it for another reason, in which case why would you even think about going the cheap route to save a couple of dollars. Pingdom is something like $200 a year, if you can't even spend that much I'd work on my projects instead of worrying about uptime.
You'll love my edit in that case.as much as i hate your face because of your previous useless comment...you do make a good point here.