Thank you so much! This was really helpful—I hadn't been able to figure out how to get this extension installed.

@tig said:

I quote from the 'flattery' site http://www.pumpkinpirate.info/flattery/
Installation
To install Flattery, simply copy the file "flattery.rb" and the folder "flattery" into the SketchUp plugins folder.
On Windows, this folder is usually C:\Program Files\Google\Google SketchUp 7\Plugins.
On Macs the folder is usually /Library/Application Support/Google/Google SketchUp 7/SketchUp/plugins.
Once the files are copied, start SketchUp.
You should see the Flattery toolbar.
To check where your version of Sketchup is actually installed open
Menu > Window > Ruby Console
and type/copy+paste this
Sketchup.find_support_file("Plugins")
Typically you substitute '8' for '7' for a newer version of Sketchup.
'Flattery' is an Extension and needs switching on in
Menu > Window > Preferences > Extensions > Flattery
If the 'Flattery' toolbar is still not showing check
Menu > View > Toolbars > Flattery
is ticked...