I feel we are not missing any technology in staying connected with our friends, but we are missing that zeal from within to stay connected with friends.
However I also feel that life is a continuously changing dream and hence when we move on, we get new people and we update ourselves with new relationships, new learnings, new fun ideas and lot more.
I love all my friends and I have thoroughly enjoyed my life so far with each one of them. But the truth remains is that when we move on, we may lose the contact and that should be acceptable to us. It is acceptable to me.
So concluding my thoughts -- I think "Re-connect" is possible only if individuals feel something from within. Until that happens, all messengers and social networks will behave as a bank account with lots of checks and but no cash!