unburden-home-dir allows users to move cache files from browsers, etc. off their home directory, i.e. on a local harddisk or tmpfs and replace them with a symbolic link to the new location (e.g. on /tmp/ or /scratch/) upon login. Optionally the contents of the directories and files can be removed instead of moved.
This is helpful for NFS homes, systems with homes on small flash disks or SSDs but with a lot of RAM, and for not cluttering backups of /home/ with cache files.