Paula let me know about Twitxr and I was impressed. It has a client for most mobile devices other than the BlackBerry but it does have a simple email and mobile website front end that works just fine on my Berry. You can email it text and images along with your location and it will post it on your timeline.
They also claim to be able to connect to Facebook, Twitter, Flickr, & Picasa but I have not had a chance to check those out yet.
Head on over to www.twitxr.com and let me know what you think.