It might not be much help but Tweet a Sound posts text to Twitter, have a look into the guts to see what's going on, I think it uses [ajm.ruby] from the AJM objects collection. Good luck investigating!

Any updates on this? I've downloaded Tweet A Sound successfully, but as it's a standalone app, I can't open it up to see what's going on inside ... can I? Also, I'm having a bear of a time with ajm.ruby. It seems to be outdated. So any direction I can also get on this exact same question would be amazing.

i am afraid that you would have to do this in java using [mxj] and the twitter api. i haven't found a good external for that so far (i seem to remember that someone did this a while ago, but not if it supported pics). seach the java forum for twitter. j

If you want to see the code mentioned by Luke, you can find it on my blog: http://www.soundplusdesign.com/?p=4213 It's a little out of date though. Some people have been having issues, I think Twitter has changed stuff on their side, although I'm getting it to work on my side. I'm sorry I don't have time to update it properly, but in the meantime it should give you a basic idea of how it works.

ajm.ruby is out of date, Adam replaced it with Jruby: http://compusition.com/web/software/maxmsp/jruby_for_max Then the Ruby code should work with the above :-)

Good luck!