Waze has got to be one of the AWESOMEST, most useful apps EVER. I finally started using it after a couple friends raved about it. It is one of the most efficient, if not most, GPS systems--it talks to you, it takes into account traffic, warns you of cops ahead, of accidents, and even red light cameras. By taking into account traffic, it truly takes you through the quickest route to get to your destination--I mean, I have seen parts of LA I never knew existed. If you live in a city like LA, I highly recommend you download this app ASAP.
I stopped using it for a few days, thinking that it wasn't really making my commute to work shorter...boy was I wrong!!
There are a few down falls though, but I think the overall effectiveness is still worth it. Here are some things you should just be aware of: