More detail: 1)Sometimes when I'm messaging, I wouldn't want a picture taken - for example if it's first thing in the morning and I've still got bed-hair and I'm in my pyjamas. So for some messaging purposes, that would be an issue and I'd want to opt out of sending a picture, while still being able to send a message. The makeshift alternative is taking a picture of the ceiling or something irrelevant. I suppose denying the camera permission might work too? I guess if I where using this with purpose I'd try that. Taking pictures is fine as is for business or work related things, or anything else where its reasonable for all users to have an expectation of looking presentable. Though that does mean I feel it doesn't solve the annoyance of getting ready for a video chat when you don't look your best. 2)I couldn't see how to set up a private room if I wanted to - I saw it mentioned that that feature exists but it's a mystery how I'd access it 3)There's the age old issue for anonymous-ish public message boards with images - preventing misuse. You seem aware of this issue thankfully! 4)the mebeam keyboard looks cool but isn't as easy or efficient to use as a regular virtual keyboard. Personally I would just let users use their regular keyboard, rather than trying to create one just for this one service. 5) on my phone, whenever front or rear camera is mentioned it's referring to the opposite of how I think of front and rear. Holding the phone so I'm looking at the screen, if I choose rear camera my face is shown on camera, surely that would be the front camera? I can't tell if my cameras are getting switched round somehow or if I'm just wrong.