I feel that I will waste my ressources if i use longer than necessary NING as a provider for my open social network. I know that NING promised that we can migrate from NING and that they will gives us a TAR file which can be used to save the content of my network. In this case I am a total newbie and do not what what I have to expect as this file. How to handle this - are there any tutorial videos which will explain me how to re-install these xml files with a community builder by boonex or JomSocial. Any suggestions?