If you have a new sim that needs stuff, these gifts can really help your sim get started, by using them or selling them. It will glow all dazzly sparkly when someone on your wall or someone that knows your wall, sends a gift to you. And for interactivity, you can send your sim friend a gift via an in-game postoffice that they will find in their active sim's mailbox. When you have an account, you are able to read each other's walls.
So you chat about sim things and be entirely on topic.
