Screenscrew is harmless joke program created by RJL Pranks. It's origin is from the same website where Clickme came from, which is rjlpranks.com. This joke program can be easily turned off by simply ending it's task in task manager. Due to being a type of malware, the site is blocked by browsers like Google Chrome.
It doesn't have much of a payload. It just makes transparent black lines in the screen, which is very annoying but not that malicious.