I have spend 5 minutes on your website, but I cannot figure out what would be the advantage of using this instead of Google Contacts.

Here is also a few problems I find:

1) I love that my google contacts are in Gmail and Google Voice on my desktop. I don't think that if I use your service it will autocomplete my contacts in Google Voice for example.

2) Google will most likely still exist in 20 years, you? I'm not so sure.

Do you have any advantages of using your service ? I do not care about more simple or secure, Google Contacts is simple and secure enough. Do you have any cool features, like for example synchronisation between accounts ? Me and my wife would love to have a group in Google Contacts called "Family", where if I add a person, or change a setting it would automatically update in her contacts.