Posterous needs a Travel Mode. We all know that people have been targeted for burglaries based on social media postings. The practice is pretty strightforeward. Someone posts about the vacation they're on and a 'friend' robs them.
This is compounded on Posterous with a public facing blog. I don't feel comfortable posting pictures while I'm on business but really, really want to... so how about a mode that you can turn on 'Traveling'. You can send in pictures and capture the titles, content and times but they're queued until you return and turn the mode back off. Your feed is then updated with all the posts, with the original time stamps.
I realize you can set a future date to have your posts published but it's not intuitive, this would be a blanket mode.
Max out your passcode attempts. You will then get a message saying all your local data will be erased. You are then prompted to login with your salesforce user name and password (the one you use with your browser). You can then pick a new passcode.
I only use the iPhone app to check events and look up numbers so any local data is of no use to me; hopefully you too.