I do not use facebook, Twitter, Google connect, etc ... The only thing that matters to me is that the members of my dolphin site can arrive on new site Una with the data of their profile in one click via Dolphin Connect, so it is from house to house, and yes, it works very well.
I try to be independent (as far as possible) from other services, especially when they do not bring much, if we think carefully.
I'm not talking about Horde of course ...