Internet service providers will begin issuing warnings to their users who are swapping copyrighted files online.   The ISPs that will be implementing the new program, called the Copyright Alert System, are Verizon, AT&T, Time Warner Cable, Comcast, and Cablevision.  First time offenders will receive a warning and repeat offenders will receive a slowed data connection for 48 hours.  The program is designed to educate users about copyright law rather than punish them.