I've been trying to figure out how to do this to upload pics and create threads on 4chan. The only thing I've found I can do is use VNC to access my home computer and post with that.
It lies in the safari took kit installed on the iphone. I am secretly writing a native app that allows you to open the app, choose your board and upload any pic you want. I asked moot if I could build it but he said its something that they were working on. Bullshit. So I built it and am debugging it right now. It will hit cydia in about a month. There is no fucking way apple will let that into the appstore.