Looks like we, plasq and the creator of Spotlaser have independently struck onto something similar.

Skitch:

Spotlaser:

This is mostly cosmetic – In the case of Skitch, you can ‘drag a file off’ with drag me. On Spotlaser, it is a button to start the search.

PLUS! they both start with ‘S’ and we are both from Australia. ohhh spooky.