weather

I believe a great use for this module module would be a SMS alert system for a school or hospital. I run a few dozen drupal school and church websites and I would love to have a SMS application that would send out a SMS message to alert website subscribers to a school closing or a school lockdown.

Has this been done? Or can someone point me to where I need to go? Or does someone have the ability to do this and want to make some xtra $?

I tried posting this question in the forums w/o response ... http://drupal.org/node/533906
I'm not sure how best to phrase want I want, making it hard to search for, so here goes;
Is this leaching?