Reputation

Reputation is a feature that was introduced in The Urbz: Sims in the City and The Sims 2 Apartment Life expansion pack.

The Urbz: Sims in the City
Rep is determined by your relationship with Urbz, Urbz can go from Level 0 to Level 100. The maxium Rep an Urb can have is 999. Rep is on the HUD and when it gets to the big Star, the Rep level will go up. Socializing with Urbz to build relationship will increase your Reputation. Rep is needed to get in VIP Rooms, Go to new areas and get new items (Such as a new Skill Builder machine), and as well as seeing your Urb on posters.

The Sims 2 Apartment Life
Reputation is determined by the interactions your Sim does while out and about town, and can be viewed in the Simology tab under Personality: the greener it is, the better, while conversely the more red that fills the bar, the worse off in Reputation the particular Sim is, and is accompanied by a short phrase describing the level of the Reputation they currently have.

Good Interactions, such as Admiring another Sim or friendly banter, will give you better Reputaiton; whereas Bad interactions, such as any ''Irritate. . . or Fight. . .'' interactions, will slowly lower it. Different Reputation levels can affect your Sim's interactions with others: the Better Reputation they have, the more others notice how good they are and it becomes easier for that Sim to make friends, with more success with certain social interactions. If they have a Bad Reputation, the opposite applies: people outwardly loath being around them and it is harder to make friends, with social interactions becoming less successful. If you get a Romance or Popularity Sim to earn enough Good reputation, you can get a really successful Sim.

A Sim's Personality naturally dictates how they earn Reputation: Nicer Sims will naturally gain Good Reputation much quicker and easier than others, and can even have a Want to have a "Good Reputation". Mean Sims on the other hand, often find it easier to make enemies by doing mean interactions, and get worse Reputations as a result. However, meaner Sims will sometimes actually want to have a "Bad Reputation"!

If a Sim admires other Sims their Reputation will get better,But if they Gossip their Reputation will get worse.

The Sims 3 Generations
Sims in the Generations expansion pack can attain romantic reputation. An 'Eternally Faithful' Sim has never cheated and 'has made the right choice when it comes to choosing a spouse'.

Romantic Reputations
 * Neighbors and Sims around the community will take notice of any public displays of affection!
 * With The Sims 3: Generations, Sims around the neighborhood will take notice of any dates, romantic socials, or displays of affection performed in a public setting.
 * Depending on a variety of different factors like how many times a Sim has been seen with other Sim, how many times the Sim has been seen with other Sims, or even if your Sim has been caught cheating before, your Sim will develop a Romantic Reputation that will affect the future of their love life.
 * Sims who are seen being Romantic with only a single partner will likely be given the "Faithful" reputation or even the "Eternally Faithful" reputation for those in a long term monogamous relationship.
 * Sims who have been witnessed being romantic with many different Sims simultaneously, or perhaps have even been caught cheating before, may develop the “Cheater” or “Player” reputations depending on the extent of their transgressions, and new romantic relationships will become harder to develop.
 * Sims who have been in many relationships throughout their lives may develop the “Casanova” or “Don Juan” reputations. Having WooHoo with one of these Sims will leave you with the much sought after “Incredible Time!” moodlet.
 * The player can use the brand new Scrapbook to see the Sim's romantic stats: their reputation, how many romances they've had, the number of times they've cheated on other Sims.
 * Sims also have several brand new Romantic interactions that allow them to declare their love for another Sim, accuse a Sim of cheating on them, or even tell a friend that their romantic partner has been cheating on them!
 * Reputations are hardly earned. If the Sims have a reputation the players like, it would be better to be careful.
 * If a Sim wishes to have a clean start, they can purchase the Clean Slate Lifetime Reward for 25,000 lifetime points.