My favorite social networking service that I discovered via The App Store is called Loopt. They already have a website and an application on Facebook. Loopt is also supports dozens of mobile phones that aren’t iPhone but I live in a world where if it isn’t on iPhone then I don’t know about it so I just learned about this awesome social networking tool.

You have friends and you want to know where they are. They have to tell Loopt where they are and then you can check all of your buddies and their current location. It’s awesome! I can update my location using iPhone’s location services and it automatically posts my location and an update to Twitter or Facebook. What more could I want?

Well, there has to be an easier way of adding friends. Perhaps giving friends a Loopt account number or my email address would be easier. Instead, they have to know my phone number. I’m not secretive about my mobile but wishing there was an easier way.

Justine Ezarik posted her thoughts on the service after she sent her number to a few contacts that didn’t need her mobile number. Higher profile bloggers have to be careful about posting their number online and Loopt doesn’t give you any other options.

There has to be another way to find your friends than through something personal like SMS.