boing is also the name for a service provided by the Irish bank Bank of Ireland (and yes they do write it in lowercase for some reason). It stands for Bank Of Ireland Net Guardian, and basically consists of a Windows desktop icon which can be dragged onto a browser window to fill out shipping details, billing address, etc.

Its main purpose is that it also provides a new, virtual credit card number for every time you carry out a transaction, and is therefore designed to allay suspicions of the Irish public with regard to giving their credit card numbers over the Internet.

It was/is due to be launched in August 2001. Personally I find the adverts distracting as the word reads too much like "boring" when it's quickly glanced over.