Welcome to CUTs!
CUTs is a procmail "hack" that basically enables you to use a normal cellphone as a Unix/Linux terminal. From anywhere.
If you have a cellphone capable of short text messages, a cellphone service provider that enables you to send and receive emails as short messages (or similar), a computer connected to the Internet (running sendmail/procmail) and a domain, ... Then you can have access to an online Unix/Linux box from anywhere, aswell!
Here are a small list of things that I have done from my cellphone:
I had a prototype of this back in early 2000, but the server I developed it on had a disk crash or something. I can't even remember for sure. Then I wrote it again from scratch this summer (2002) but I wanted to get some better pictures before I released it... Well that hasn't happened in almost 3 months so I'll just put it here now, crappy pictures or not. =)
I guess the whole concept of using your cellphone to access your Unix/Linux box via the Internet isn't as cool as it was back
in early 2000, now that we have WAP, GPRS/CDMA, and 3G on the way... But I still get some "Wow's" when I show it to people (err, fellow nerds, I mean).