If you are the type who fears Facebook owning your personal data, and maybe considered switching over to Diaspora, you may be just the target for ownCloud.
European-U.S. data protection agreement: Yet another attempt, yet another failure
The recent agreement between the US and the EU is the third attempt to secure the transfer of personal data from Europe to the US. Holger Dyroff, co-founder and COO of ownCloud, does not see the new regulatory attempt as a satisfactory solution.