Twitter is introducing an alpha testing programme to a limited number of Android app users. Whilst such schemes can result in buggy and unreliable apps, there is potentially a significant upside for anyone involved.
In return for helping Twitter out by testing developments to its Android app, users may be given access to new, experimental features. Twitter stipulates in its terms and conditions that confidentially must be maintained by anyone taking part.
Maintaining secrecy will be challenging, however. There is likely to be little practical that Twitter can do in order to ensure that anyone with access to the alpha version of its Android app does not spill the beans.
To be eligible for the alpha testing programme, you must be be a member of the Twitter for Android Experiment. The reality is that this represents a small, relatively contained group of users, therefore minimising the chances of leaks.