Where do Safari or Chrome store the flash media data Where do Safari and Chrome store the flash media files? For example, I use Safari/Chrome to listen Pandora during work time, and all my work is done through ssh to other computers. However, in such scenario, my time machine still needs to backup several hundred MB data for every hour. 

Btw, I've already exclude ~/Library/Caches directory from Time Machine.
Poke around in the invisible folders /private/var/folders.