[maxsun]

Constructive criticism would be greatly appreciated! I'm relatively new to website development and put this together in a couple of days.

For an example usage, I used it to alert me when a slow program for finding prime numbers had finished.

[raidan]

Interesting concept, but an unauthenticated SMS gateway might not be a good idea. I hope there is throttling and other means of abuse prevention in place.

[maxsun]

Do you think a simple "stop sending me messages" would be enough for abuse prevention?