Newgrounds

Newgrounds (NG) is a entertainment website that consist of four different website categories, it hosts user-generated content such as games, films, audio, and artwork composition, it was founded by Tom Fulp in 1995 (at the age of 13), who at the time produced in-house content at the headquarters and offices in the website.

Users can upload and categorize user-generated content into one of the site's four web portals: Games, Movies, Audio, and Art. A movie or game submission goes through a process called Judgment, in which it can be scored (from 0 to 5 stars) and checked by other users.

There are plenty of screamers hosted on the site, and discovered Internethell.tk site in the forums.

Link

 * All 'Newgrounds' screamers