Quick Note: I went ahead and got a LINE account. You can find me as teradyneezeri.
Note to Xolroc: Sadly, this one requires a mobile number as well.
If anyone knows of a good Skype replacement (not Google Hangouts) that does NOT require a mobile number, please let me know.
Link
Felthry
I'd like to see more people using XMPP, simply because it's a simple protocol that's decentralized and already well-established.