There are a large number of apps out there meant for interacting with craigslist and it can be hard to tell which one would work best for you. Some of them do search well, some post well and some simply browse well. This app seems to have it all but only you can tell if it's perfect for you. Fortunately it's perfectly free so there's no reason to not give this one a try. I like that this app will auto locate cities around you to ease up on the need to type. Setting filters on searches is simple to follow and easy to change. And yes, you can search multiple cities, something that's helpful for those bigger purchases where you might be willing to travel a bit to get just what you want. As for posting you do have to have an account although the app will help you register for one. If you do have an account it will pull up old listings and easily allow you to repost an old posting. As someone who regularly runs ads about upcoming group events this is super helpful and means I can do this on the go instead of at a computer. I currently have several craigslist iPhone apps on my phone but I think this one will likely replace them all.