I cranked together a little moblogging script last night that accepts pics and text via email and saves them out to a gallery. Very v0.1 but definitely a good start.
Anyone interested can email me for the code, but you need to have access to a sendmail alias file to make a mobile adddress that will post. Then there are security and permissions concerns. Ah well. It is a start. Email me if you want a copy of the script.