Personally, I find the collated list pretty much of a joke. It reflects the partisan passions of the moment, not anything resembling a serious verdict of history.But it was predictable that the list would be ridiculous, because of the methodology:
All  bloggers were allowed to make anywhere from 1-20 selections. Rank was determined simply by the number of votes received.So, if everyone put Jimmy Carter or Barack Obama on the list, he'd come out as the worst person in American history. (The expression "of all time" highlights the silliness of the list. When in history do we start having "Americans"? 1776... 1787... or thereabouts. There were no terrible Americans in the Middle Ages or ancient times. Saying "of all time" makes you sound like a bombastic know-nothing. (It's an expression we've been using jocosely, chez Meadhouse, ever since this happened.)
In fact, only 25 of the 43 put Jimmy Carter on their list, and that was enough to put him at #1. Obama was second with only 23 selections. They're easy to think of, so they got on a lot of lists. (Surprisingly few, actually.) More obscure but more evil Americans were less likely to come to mind, but would probably have raked in votes if the surveyed bloggers had been given a list to chose from.
So, tweak the methodology. Have 2 stages where you first take suggestions for who should be on a list, then have the voters pick however many they want from the list. If I have to pick 20, I may need to pad it out with individuals who aren't really that bad. Or give everyone 20 votes and let them pile the votes on their choices in whatever proportion they want. You could dump 15 votes on Obama and 5 on Carter, for example.
By the way, oddly enough, my name appears in the first comment over there at Right Wing News:
What an [sic] spectacularly ignorant list. I'm a progressive, and I could do a better job of being a right-wing butthole than the people who voted........ whoever they are.
Michael Moore over Upton Sinclair or Lincoln Steffens? Jane Fonda over Paul Robeson? Not one member of the Warren Court? Not Theodore Roosevelt? Where's Daniel Ellsberg or Seymour Hirsch-- or Julian Assange?
This is why we make fun of your lack of intellect, folks-- you can't even identify the people who've done the most damage to your belief system. It would be as if progressives compiled a list of the most vile and bigoted conservatives in history and picked Wally George, John Schmitz, Ann Althouse and Orly Taitz.
If you click over to Bainbridge, you'll see his comments on each of the individuals on the RWN list. Bainbridge also makes his own "Worst Americans" list, with a decided emphasis on traitors. He puts Aldrich Ames and Benedict Arnold at #1 and #2.
Now, for some reason he puts Paris Hilton at #11. Huh? I guess he thought there had to be a female on the list and that was the best he could do. He called her the "personification of the celebrity obsessed culture." Isn't the obsession with celebrities the fault of the people doing the obsessing? (Let's take responsibility for our own faults. It's the conservative way, I've heard.)
In an update, he defends his #11 selection of Hilton "as one of the earliest examples of how it is now possible in our culture to be famous merely for being famous without having any significant merit or worth."
Earliest examples? Earliest examples??!!! If Paris Hilton seems like an early example, you might not know so much about history. The definition of "celebrity" as someone who is "known for his well-knownness" appears in a book that came out in 1962 — "The Image: A Guide to Pseudo-events in America" by Daniel J. Boorstin.
Can we think of some earlier examples of famous-for-being-famous Americans? Who was Boorstin writing about in 1962? We had empty celebrities then, for sure. Somebody motivated Andy Warhol to say "In the future, everyone will be world-famous for 15 minutes." Or is that why we can't remember the empty celebrities of the past? Their fame-time ran out, and we forgot.
And how about giving Paris Hilton credit as an entrepreneur? You try creating a compelling character out of yourself and making money out of that product? The fact is, she's a model and an actress, and the way she annoys people like Bainbridge and seems dumb and pointless is part of the fabulous image-product that has sold so well.