kio_clipboard is a kioslave (protocol) to access the KDE clipboard.
You can use it to upload a screenshot with Konqueror without saving it to a file. Or, you can use it as a tool to quickly convert between different file formats.
A directory notification module is included, meaning any file views automatically refresh whenever the contents of the clipboard change.
This is not an original idea. I saw something similar on here a long time ago but it seems to have disappeared.