[jmm]

This is hilarious. And fits nicely with the expression, "girls are like parking spots; the good ones are always taken."

[po]

This app is the equivalent of "circling" the lot instead of parking far away. Would make for good logo inspiration. :-)

[Mz]

That's called "vulching" among folks I know. (If you aren't familiar with it, the word refers to "circling like a vulture" -- at least in this case. A quick search turns up different uses of the word which are similar but not identical.)