What kind of a feed are you talking about? You can have a bot created to do this kind of thing. Unless you know iMacros/Javascript. Collecting the content would be easy, it's the scheduled posting that would require previous knowledge of a programming/scripting language used in a bot or program.
I've got all the content, I have a folder with 5000 pics saved in it, I just want a way to post it onto Twitter in bulk!