Heck I'm commenting before reading the article, I should go read it first...OK, slideshow..
Yeah, they seem to pitch it as a Paypal type thing that anyone can use, but I hit a brick wall when it came to accepting payments. Perhaps I should try again or something but I do recall last time it was asking for business registration numbers etc.
If I can use it then I'd happily do so, as Paypal rob me blind accepting money (fee) and then transferring to Malaysian ringgit (fee).
While I'm sure that there are certain customers who churn regularly, there's another whole group who very regularly send payments and love TransferWise (ex. freelancers).
The most useful bit seemed to be about building KPIs around core user journeys, but that feels a bit obvious...