You are correct that I'm using mappoint. The cookie differences would be a headache in rewriting utilities, but a shift of number would be impractical in the extreme. If someone has a web page with hundreds of links to their location, as many of my members do, all of those links would now point to someone else. Most use it in e-mail signature lines, and of course in forum signatures.
The requirement to join the forums in order to show up on the maps has been very helpful in making sure that the maps don't get spammed. I would hate to break the link between membership numbers and map id numbers.
About 2500 of my members have placed themselves on the map at one time or another - many drop off when they aren't actively travelling.
