Integrated Rating Request (https://github.com/mediavrog/integrated-rating-request) is an open-source Android library is aimed at app developers who want to improve the way users are asked for ratings. (as popularised by Circa in http://bit.ly/125IFe6)
It provides full design customisability, is based on a rule engine which is adjustable and/or swappable and supplies a list adapter decorator for automated management of the integrated rating request element in any list. Let me know what you think and if it is useful for you.