Such organizations are also known as warez groups or crack groups. The first use came in 1990 on the THG release of the PC game Bubble Bobble.[6] This file was used in lieu of the more common README.TXT or README.1ST file names.[4] The perpetuation of this file extension legacy was carried on by warez groups which followed after THG and is still in use to this day. Hence its strong presence on Usenet newsgroups that carry binaries and on P2P file trading networks.