Suburbia - what is the rule of Reputation?
Reputation = number of people that added to the total, at the end of the turn.
The relevant part in the rules:


ADJUST POPULATION (BASED ON REPUTATION)
Increase or decrease your Population on the Population Board by the amount where your Reputation Cube is located. If Population gets to 0, any additional movements backwards cost $1 per Population. If the player cannot pay this fee, nothing happens to the player...he just stays on the 0 spot.
As your borough grows, it will cost more to maintain and its “small town” quality will decrease --
this is represented by Red Lines on the population track. When a player’s Population crosses a Red
Line, then that player’s Income ◯ and Reputation █ are both reduced by 1 (moved to the left one
space) for every Red Line the player moves past. If a player’s Population dips below a Red Line (this
can happen if he has a negative Reputation) he moves both his Income Cylinder and his Reputation
Cube forward (moved to the right one space).