Hack is now ready for adventurous users:
USB Host for non-techs
mali100 has packaged the USB Host and keyboard software with instructions. Check the wiki for complete instructions. It's not guaranteed, I haven't tried it yet (I need a card reader), we'll keep simplifying it, but now the goal is within reach of non-programmers.
Thanks to everybody here for your ongoing support and interest. Please sign up at xda and thank (using the Thanks button) verygreen, ros87, Renate NST, and mali100 for their help in both relevant threads.
Please post your results and problems on above thread so they can help weed out problems.