I would say that there is no need to keep these given that they don't hold content. If empty folders do serve a purpose (e.g. the hot-deploy folder and lib folders in components), it should hold a readme doc explaining the purpose.
Regards, Pierre Smits *ORRTIZ.COM <http://www.orrtiz.com>* Services & Solutions for Cloud- Based Manufacturing, Professional Services and Retail & Trade http://www.orrtiz.com
