http://www.teehanlax.com/blog/?p=447

The icons I am referring to are in the 2nd column, toward the mid-bottom.

A few seconds later I realized #2 a parking meter. It’s probably fine. I might play with just showing the top half of the meter. Not sure about #5. I’m used to my Garmin with the text “Where to?”. The intent of #4 and #5 is confusing to me. #4 shows you where you are, and #5 gives you directions somewhere? Why can’t you just do #5 and show where you are when it comes up?

One comment: I’ve only seen these icons used on the bottom bar of the phone. I haven’t seen them used in any application, that I know of. Look at other applications. I think the de jure approach is to use the gray silhouette icons (e.g., the Facebook app).