Does anyone use anything-sync-daemon?

I wonder if anyone has any experiences of having used anything-sync-daemon?

I have it installed (at the moment the service is disabled) but I can’t figure out which directories can be put on tmpfs to sync/re-sync with the daemon to be most beneficial for the overall working of the system.

I would appreciate your sharing of experience/suggestions/comments.

ps. I use profile-sync-daemon for my browser’s profiles.

edit: correcting the link to psd.