Locate All Empty Files and Directories

find . -empty

will do just that for the current directory.


To remove them use:
find . -empty -delete

The delete option will remove files and directories. If a directory contains just empty files, the files will be deleted and then the directory, which has suddenly become empty, will also be deleted.


Note that:
find . -size 0

will not detect empty directories as they have a non-zero size.