It's interesting that according to the FT article mentioned [0] the license is for Europe - and they're talking with UK payments companies. I'm not sure about the rest of Europe, but in the UK I don't imagine a lot of interest - payments are easy by bank transfer. Paying to other European countries isn't great via the banks, I imagine most people use something like Paypal now. But I don't think international payments are likely to be a big part of Facebook realistically.

The license is apparently valid throughout Europe though so maybe other countries have poorer bank transfer systems and this would be better.

[0] It's paywalled, so techcrunch discussion: http://techcrunch.com/2014/04/14/facebook-emoney-whatsapp-re... , FT article : http://www.ft.com/cms/s/0/0e0ef050-c16a-11e3-97b2-00144feabd... , google search for it (dodges paywall) : https://www.google.co.uk/search?q=facebook+targets+financial...