Re: holdup #2) Are you saying you would prefer that it automatically post to social networks all the time, or that you would prefer to not have preferential treatment of users that are willing to make a post? Or that the default should be to post with an opt-out option?
Re: holdup #3) Our native apps currently only run on Android 4.0+ because those are the only devices where we can guarantee five-point multitouch capability. There are a large number of 2.3.3 and 3.0 devices that are capable, but there is no way for us to limit downloads to only those devices while simultaneously disallowing downloads to devices with those operating systems that can only do 2 or 4 point multitouch (and we definitely don't want to allow customers that don't have 5 multitouch capability to download our apps).
Our HTML5/JS SDK doesn't have such problems, though, and works on 80%+ of the current installed smartphone user base.
Also, re: holdup #1) We can make the stamps slimmer, but don't really have a reason to. We like having an analog to the inked stamps everyone has used at some point in their life, and this form factor does just that. IF someone wants to build an app that requires a more portable version of the stamp, we'd be happy to build stamps for them with a slimmed-down form factor.
Thanks again for the feedback!