As part of this test I used a POI database containing petrol station data and flagged those stations that were BP affiliated, Melbourne based, 24 hours with Car washes and ATMs. Rather than use the TomTom make0v2.exe tool, I manually created an ov2 file via the TomTom wizard. The wizard outputs the necessary html code to place on the website to create both the addtotomtom button and reference the POI information created via the wizard (and hosted by TomTom).
Separately I created a JSON file with the same locations for geocoding on the fly and locating on a Google map for reference purposes. Here is the page link: