What the location arrow on iOS 4.1 now means

I wonder why Apple didn't use color to distinguish from "GPS ON" and "Some App knows where you are"<p>To me, I'd like to know when my phone is sucking down juice on knowing exactly where I am, and I'd also like to know when the phone just knows about where I am in a low battery usage way.<p>I suppose that Apple thinks that most people just care if the phone knows where they are or not, battery life is a non-issue.

That arrow drives me nuts. The formerly used crosshairs icon implies a specific target, and is intuitively associated with a precise location. Arrows, on the other hand, are used for all sorts of things in lots of different contexts, and implies a direction rather than a specific spot.

I've never even seen the "arrow" and I use my iPhone every day.