The driving community in Los Angeles is just getting going, but it'll take a little while until waze starts to deliver its full value in your area. Now's the perfect time to get involved, though - you'll be a key member of the community in your area!
To help develop your local driving community, make sure you open waze each time you get into the car. This will help to passively share real-time road info, but you can also take a more active role - share road reports and if you see a wazer with a little green chat icon (indicating that this wazer agrees to be pinged), make sure to say hi!