The Smart is the 2nd "orphan" car I have owned, (not counting the Brits). The other was a Merkur Xr4ti. I also owned a 97 850 Volvo and 2005 Jeep Liberty CDI (yes a diesel and only 10 thousand made) that might as well have been orphans. I have seen a kind of evolution of the owner forums over time, so here is my theory. Lots of views, posts, and members when the car is new/still in production. As a make/model ages or goes out of production the numbers tend to fall off for a time as many people don't want the potential problems and risk of driving an older vehicle. These folks are probably still car enthusiasts, but are now focused on a different/newer car. The new car owners/enthusiasts are gradually replaced by the DIYers and people who are besotted (myself included) with that model. I Think the posters and viewers are increasingly concerned with how to maintain and source parts for the ageing vehicles and the technical aspects of repair as fewer shops are willing to work on orphans. Possibly the orphans still on the road migrate increasingly to owners willing to face the challenge of maintaining an older, out of production vehicle, so the numbers go up again.