The idea is to find the posted tag, go there in one of your cars, screen shot it so your image is clearly not just a copy, say where you found it, then post with a new tag that the next player has to find. Amuse us. There is, after all, only one rule.
The rule will be tweaked and adjusted as necessary. So far, there's only one, but it has sub-clauses.
Rule 1;
Thou shalt not be boring. So don't post dull tags of blank walls, they have to be findable from visual clues in the screen shot.
Rule 1 (i)
Please post the old tag and your new tag in the same post. This helps the game flow for everyone. Confirmation of the old tag will very rarely be required. The tag remains open to all until a new tag is posted.
Rule 1 (ii)
No reposts. Once we've been somewhere, we don't want to go back there. That would be boring.
Rule 1 (iii)
Although Le Mans has just become a whole load closer with today's update, it is still a heck of a grind to get to a daytime lap race. Any Le Mans tag has to be followed by a tag from the circuits avalable in the Amateur, Nascar or Pro/Am series, otherwise the game gets locked for a whole bunch of noobs, and that would be boring.
Rule 1(iv)
Don't cost us gold. If a track exists only behind a gold pay wall, tags from it are banned.
Rule 1 (v)
No nightime tags. They are boring. As is photoshopping your car on top of the Eiffel Tower, outside the White House, or in Red Square. That would just be silly.
I'll start with an advertising billboard that confuses me. We've all whizzed past it, but it rarely shows its face.