I wrote a site which allows you to join or create chat/discussion threads from your smartphone/tablet/pc (chrome, newer firefox). I was going for something that you can use to allow people to communicate ad-hoc, or to set something up for a place/event as needed and then forget about it when you are done using it. Everything runs inside the web browser so there are no apps to download, you can navigate away from a thread and come back to the main site to rejoin where you left off. No personal information is collected and anything you post will get removed in four hours. Let me know what you think.