In general it is irresponsible to write an email chain letter, because such letters tend to waste bandwidth, eat up space on mail servers, and waste the recipients' time. Such emails tend to fall into three classes:
In general, you should be skeptical of any email you receive which:
to search for key words and phrases in the email. Very likely you will find several pages devoted specifically to the legitimacy of the email you received. If you find that the mail is a hoax, you might consider mentioning the fact to the person who sent you the email, and asking that they notify the person who told them, etc. (*not* the same as a chain letter, since it funnels one person at a time back to the top).
These sites have more information on specific hoaxes, clues that a message is a hoax, and the adverse effects of continuing to distribute such messages:
----Begin quoted material---- Subject: New Computer Viruses FYI: Public Service Announcement Please spread the word. Very Important!!! Please be aware: There is a computer virus that is being sent across the Internet. If you receive an email message with the subject line "Good Times", DO NOT read the message, DELETE it immediately. Please read the messages below. Some miscreant is sending email under the title "Good Times" nationwide, if you get anything like this, DON'T DOWN LOAD THE FILE! It has a virus that rewrites your hard drive, obliterating anything on it. Please be careful and forward this mail to anyone you care about. WARNING!!!!!!! INTERNET VIRUS The FCC released a warning last Wednesday concerning a matter of major importance to any regular user of the Internet. Apparently a new computer virus has been engineered by a user of AMERICA ON LINE that is unparalleled in its destructive capability. Other more well-known viruses such as "Stoned", "Airwolf" and "Michaelangelo" pale in comparison to the prospects of this newest creation by a warped mentality. What makes this virus so terrifying, said the FCC, is the fact that no program needs to be exchanged for a new computer to be infected. It can be spread through the existing email systems of the Internet. Once a Computer is infected, one of several things can happen. If the computer contains a hard drive, that will most likely be destroyed. If the program is not stopped, the computer's processor will be placed in an nth-complexity infinite binary loop - which can severely damage the processor if left running that way too long. Unfortunately, most novice computer users will not realize what is happening until it is far too late. Luckily, there is one sure means of detecting what is now known as the "Good Times" virus. It always travels to new computers the same way in a text email message with the subject line reading "Good Times". Avoiding infection is easy once the file has been received simply by NOT READING IT! The act of loading the file into the mail server's ASCII buffer causes the "Good Times" mainline program to initialize and execute. The program is highly intelligent- it will send copies of itself to everyone whose email address is contained in a receive-mail file or a sent-mail file, if it can find one. It will then proceed to trash the computer it is running on. The bottom line is: - if you receive a file with the subject line "Good Times", delete it immediately! Do not read it" Rest assured that whoever's name was on the "From" line was surely struck by the virus. Warn your friends and local system users of this newest threat to the Internet! It could save them a lot of time and money. Could you pass this along to your global mailing list as well? ----End quoted material----
----Begin quoted material---- Subject: New and Dangerous Virus For your information ... DO NOT DOWNLOAD ANY FILE NAMED PKZIP300 REGARDLESS OF THE EXTENSION (see attached) We work closely with the military and received this message from a very reliable source in DC this morning. A NEW Trojan Horse Virus has emerged on the internet with the name PKZIP300.ZIP, so named as to give the impression that this file is a new version of the PKZIP software used to "ZIP" (compress) files. DO NOT DOWNLOAD this file under any circumstances!!! If you install or expand this file, the virus WILL wipe your hard disk clean and affect modems at 14.4 and higher. This is an extremely destructive virus and there is NOT yet a way of cleaning up this one. REPEAT: DO NOT DOWNLOAD ANY FILE NAMED PKZIP300 REGARDLESS OF THE EXTENSION. ----End quoted material----