For all its forward-thinking feature goodness, the iPhone is missing a lot of things that we’ve all come to expect from modern cellphones. On Monday JuiceCaster will plug one of those holes with the release of Flutter, a free picture message service that doesn’t require jail-breaking. It’s not a full-on MMS (multimedia messaging service) for the iPhone, because it routes messages through JuiceCaster’s servers, but for the user it looks like MMS. You open the app, take a photo, pick a contact from your phone address book, geo-tag it, and send it off. About 30 seconds later a message shows up in your friend’s phone inbox with the image or a link to it. The Flutter app is free. It doesn’t support videos yet, because the iPhone doesn’t support video recording (even though it technically can) yet.