@tom79 Not exactly :-)
GNU Social extends obsolete Twitter 1.0 API, but some APIs are different, see e.g. implementation in #AndStatus https://github.com/andstatus/andstatus/blob/master/app/src/main/java/org/andstatus/app/net/social/ConnectionTwitterGnuSocial.java
One of very important features that I didn't implement yet: Groups
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!