[Spooky23]

IMO, Waze is hit or miss, but fun. If you're doing a multi-car road trip the little messaging/beep features and stuff are fun. It overweights traffic and underweights stop signs and lights. It's great for inter-city travel, especially if you're a little familiar with the road.

But it's subject to flights of fancy similar to MapQuest circa 2002 where you find yourself taking some strange back road to save little or no travel time.

[DigitalJack]

It does not give traffic enough weight for my commute. Waze is consistently too optimistic in travel time by 10-15 minutes (25% of my commute if I hit rush-hour).

With no traffic, it's spot on. I feel like it doesn't account for traffic that develops during the commute. Given the length of my travel, the roads may be clear when I start, but very congested before I finish.