Yes, this is nifty! I just tried it and found you can also post a screenshot with your project easily. After your posterous account is ready, run your Codea project and take a screenshot by pressing the sleep and the home buttons at the same time. Then go into your photos and copy the screenshot. Then go back to Codea and email the project from the main page to post@posterous.com, pasting the screenshot in the email too. Here is my test for the keyboard I did:
Nice @Ipda41001 ! We’re actually allowed to post anything on posterous i.e. text for description, screenshot image, video demo, link, downloadable file, etc. So yes, we could use it to share our code a lot easier and more descriptive. Thank you.