No less a person than Google's Matt Cuttsrecently spoke up about herding Googlebot andmore or less recommend using the noindex meta tag on pages instead of nofollow on links to them (on the grounds that it's more of a surething to mark pages noindex than to make sure that all links are markednofollow).

I must respectfully disagree with this, because in one importantrespect meta noindex isn't good enough. The big thing that nofollow does that meta noindex can't do is that it

Speaking from personal experience: never, ever set up an out of officeautoreply that sends email to the From: address of incoming email.Never. Or if you must do this, unsubscribe from all of the mailing listsyou're on first.

If you fail to do this, the users of the mailing lists you are on willkill you. And shortly afterward, the managers of the mailing lists youare on will drop you with extreme prejudice, because the last thingwe want is for the active users