Calling it futuristic isn't very descriptive of what it does.
In short (but not the tl;dr) this application attempts to act as a "contacts backbone"* for all possible "social applications". Basically it's a contacts list that shows you what services your contacts are subscribed to and what services you are subscribed to. The value proposition towards the individual is that you don't have to figure out what apps they are using, instead "it's just there"™. OP also claims that this will improve efficiency and reduce social network lock in (SNLI).
However, the problem of SNLI is not a search problem. Figuring out which apps your contacts use, especially the ones…ya know…you care about (like 10% of your contacts list) is not that difficult. The problem is getting enough people from your social network to switch to the new platform and abandon an old and familiar platform. The only time this works is if the new platform is somehow better than the old one. That is to say, the problem is with the social network application itself. And that problem is not addressed by this application.
Instead this application attempts to solve a problem that has largely been solved through concepts such as "notification center" which efficiently display notifications from your friends from whatever app it is you have installed.
Apps need to be experienced for people to start using them, a simple list of all the applications that your contacts have is not enough.
* quoted from the blog post