document: An investigation of cloning in web applications Cloning ( ad hoc reuse by duplication of design or code ) speeds up development , but also hinders future maintenance . Cloning also hints at reuse opportunities that , if exploited systematically , might have positive impact on development and maintenance productivity . Unstable requirements and tight schedules pose unique challenges for Web Application engineering that encourage cloning . We are conducting a systematic study of cloning in Web Applications of different sizes , developed using a range of Web technologies , and serving diverse purposes . Our initial results show cloning rates up to 63 % in both newly developed and already maintained Web Applications . Expected contribution of this work is two-fold : ( 1 ) to confirm potential benefits of reuse-based methods in addressing clone related problems of Web engineering , and ( 2 ) to create a framework of metrics and presentation views to be used in other similar studies .
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