Let me send you this link on Skype. Oh wait, you don't have Skype. No, I don't have WhatsApp. Facebook? No. Okay, I'll email it to you.
So, you're saying the problem is that there are currently too many messaging apps, and no agreed upon standard? And the solution to that problem is to create yet another messaging app?
As for communicating with someone who is nearby without having to type an email address or user name: Apps like Bump have been around for years. Oh wait, you don't have bump? No I don't have Google Tone. How about OkCupid?