Today I've been using an old bottom of the drawer Smartphone as an SMS server.

Its real simple,  to build an application that listens for incoming SMS's see

http://www.binaryrefinery.com/main/default,month,2008-04.aspx#a882deb30-5b45-48cf-b7a4-44bbc4fdbb68

And sends SMS see -

http://www.binaryrefinery.com/main/PermaLink,guid,10ef8f63-773f-414e-8746-8b31a271fc09.aspx

So this gives me pretty much for nothing (bar call charges) the ability to provide TXT voting,   blanket send alerts etc.   from any PC application that can call a command line application can now send and respond to SMS.

Oh the possibilities....

Next trick to master MMS.