Suggestion: Add option for fire spread town flag. Reason: I just figured with the other town flags that have been added it may be possible to add fire spread within a town. Other information: I realize this could cause a lot of lag. If you think this will be an issue then feel free to deny this suggestion.
I don't think fire actually consumes things, so fire spreading wouldn't really do what it would normally do.
Assuming our town setups is still based off worldguard, It is an existing worldguard flag. http://wiki.sk89q.com/wiki/WorldGuard/Regions/Flags#Flag_List
For firespread to work, fire destruction must be enabled (which it's not) - unfortunately, not possible at this time