I have a feeling that the new Symbols feature in the Google Maps API is going to revolutionise online mapping.
I've been playing with it for only a couple of hours and I can already see loads of possibilities. Here is my first attempt at playing with the new Symbols feature (and the new Transit Layer). Press the two 'Take Off' buttons below the map to see how symbols can be made to animate along a polyline.
I'm sure many of you can do much better. If you've already started playing with the new features in the Google Maps API post a link to your examples in the comments below.