Why thank you Aktariel. And how timely. I've really been wanting to revive this project.
Since I wrote it, KM's floating html prompt has gained many capabilities that would make the whole thing a lot cleaner. I'm deep in another project right now, but making myself a task to get something posted here within a week. don't be afraid to ping me if I drop the ball...
"Infloatainment"- as I came to call it - has an extendable 'plugin' architecture, making it easy to add modules which could monitor many things besides Finder selection - the clipboard, network traffic, the output on my solar panels...
Stats can be grouped into sections, with a disclosure triangle to hide the group
See my posting here:
Lastly - one reason the project became less relevant was realizing that Finder had selection-stats-monitoring built-in long ago, that I'd never discovered - in the "Preview" pane. (Command-Shift-P)