Interesting idea. I don't use quickbooks, but I liked your take on the google adwards. I recently tried to look at pulling data from Analytics, and the Google API just seemed hugely and unnecessarily complex.
Trusting a single vendor gateway however seems a little risky. As a developer I would much rather have a (open source) wrapper library I can use instead of introducing another layer/potential point of failure. That said, if you want to keep this language-agnostic, you'd have to run a REST gateway of some sort anyway, so having a service provider to handle this for you can be an advantage.
Trusting a single vendor gateway however seems a little risky. As a developer I would much rather have a (open source) wrapper library I can use instead of introducing another layer/potential point of failure. That said, if you want to keep this language-agnostic, you'd have to run a REST gateway of some sort anyway, so having a service provider to handle this for you can be an advantage.