I'm trying to get into the habit of actually using Mail/iCal/Address Book to conglomerate all my email accounts, calendars, and contacts. Something I noticed today when I opened up Address Book (on Tiger 10.4.11) is that there's a ton of contacts in there with nothing but an email address. I didn't add them; it appears to be addresses to which I have replied in Mail. I get a LOT of one-off emails from people perusing my web site, and I don't necessarily want to add these people to Address Book. I looked through the preferences for both Address Book and Mail and didn't see anything about auto-adding people I reply to. Am I missing something? How do I make it stop? Thanks.