A recently launched iPhone app by the name of PETSI is definitely a neat idea. It is a map-based application that allows pet owners to contact each other and go together on pet walks, exchange pet sitting and get together. I like the Pet Sitting Exchange idea as it can save tonnes of money to pet owners. Check it out: http://itunes.apple.com/us/app/petsi/id388359296?mt=8 http://petsiiphoneapp.com