Hey, if you don't mind me asking...what exactly is the practical application of having an embeddable image of a custom currency amount?
What I mean is, if you just want to know a conversion rate, then there are nice web services for that. If you want to serve the point of this and embed the image, it isn't clear to whoever is viewing the image that you're converting, say, $100 USD into BTC, because the image doesn't specify the amount in itself. To the viewer, it's just an arbitrary number pulled from nowhere, right?
I'm not challenging the usefulness of the app, but I'm just wondering what people will be using it for, since it was requested and all.
I can think of one just off the top of my head.
Imagine a site that is taking donations in BTC but wants to display the USD value of the total donated.
eg. "Our donation goal is $1000 worth of BTC, and so far we have collected [insert image here] worth of BTC".