Loving the service - great job! One feature I would love is the ability to disable sharing incoming messages with HttpSMS from android. The number I use isn't exclusively for HttpSMS, and I don't want to use up my credits with personal etc messages. I would much rather have the option to only use httpsms for outgoing messages. (I had looked to set up my own server because of this - but gave up on that!)

As it stands, I'm planning to disable the app on the phone except when I plan to use the API to send messages. This, of course, gets messy!