Tax prep services for expats

Granted, this already exists: http://www.expatcpa.com/about - but it may be possible to do some kind of automation. And at any rate the automation of accounting and tax compliance for small business is a core concern.

Salient: http://www.irs.gov/irm/part4/irm_04-061-007.html (controlled foreign corporations)

Neocommercialization

Here's an interesting business approach.

Accounting systems

HNN weighs in on accounting services.

Translation Office 3000

This tool actually does a lot of what I want to do with the administration service. Study it!

Designing a winning business model

From the Harvard Business Review. I bogged down in the middle, but it's a good article with lots of case study type stuff.

TaaS

Terminology as a Service, as envisaged by the Europeans. This is essentially my current business idea.

Forex systems

A whole range of forex systems, compared.