Xero has more than 100, 000 paying customers and 200, 000 users in more than 100 countries.

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Founded in 2006, Xero listed on the New Zealand Stock Exchange (XRO) in 2007 and the Australian Securities Exchange (XRO) in November 2012.

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So yeah, Xero Mobile, if you ever want to get off the ground, how's about you take a few pointers from these guys?

ENGADGET: Blyk alleges decent click-through rates on mobile ads

Well wouldn't you know it, the same people behind Gizmondo who're now behind Xero Mobile (those that aren't in jail, anyway) have found a way to bypass an IPO in getting Xero as a publicly traded company.

ENGADGET: Watch out: Xero merges, now a publicly traded company