Probably comes from an informed loved one right? Seems to be the case for me. I always take the time to read them just to see what the mainstream is being sent from some propagandist. These letters range from sentimental cliche to warnings of impending doom - always from an "unchecked" Democratic leader or a nefarious world body such as the U.N. These things often read like pamphlets from the John Birch Society - or at least how I imagine them.
The Nation has a great story on the history of the "smear forward".
BreakTheChain.org has some great insight to the misinformation campaigns of junk mail as well.
The smear forward has its roots in two distinct forms of Internet-age communication. First, there's the electronically disseminated urban legend ("Help find this missing child!"; "Bill Gates is going to pay people for every e-mail they send!"), which has been a staple of the Internet since the mid- '90s. Then there's the surreal genre of right-wing e-mail forwards. These range from creepy rage-filled quasi-fascist invocations ("The next time you see an adult talking...during the playing of the National Anthem--kick their ass") to treacly aphorisms of patriotic/religious uplift ("remember only two defining forces have ever offered to die for you, Jesus Christ...and the American Soldier").
....From the beginning, the vast majority of these Internet-disseminated rumors have come from the right. (Snopes lists about fifty e-mails about George W. Bush, split evenly between adulatory accounts of him saluting wounded soldiers or witnessing to a wayward teenager, and accounts of real and invented malapropisms. In contrast, every single one of the twenty-two e-mails about John Kerry is negative.) For conservatives, these e-mails neatly reinforce preconceptions, bending the facts of the world in line with their ideological framework: liberals, immigrants, hippies and celebrities are always the enemy; soldiers and conservatives, the besieged heroes. The stories of the former's perfidy and the latter's heroism are, of course, never told by the liberal media. So it's left to the conservative underground to get the truth out. And since the general story and the roles stay the same, often the actual characters are interchangeable.
"A lot of the chain letters that were accusing Al Gore of things in 2000 were recycled in 2004 and changed to Kerry," says John Ratliff, who runs a site called BreakTheChain.org, which, like Snopes, devotes itself to debunking chain e-mails. One e-mail falsely described a Senate committee hearing in the 1980s where Oliver North offered an impassioned Cassandra-like warning about the threat of Osama bin Laden, only to be dismissed by a condescending Democratic senator. Originally it was Al Gore who played the role of the senator, but by 2004 it had changed to John Kerry. "You just plug in your political front-runner du jour," Ratliff says.
tip Washington Monthly