User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9) Gecko/2008052906 Firefox/3.0 Build Identifier: version 3.0a1 (2008050715) The Address Book contact cards only allow for a certain amount of information per contact. A contact of mine gets a new gmail address once a month, and because Thunderbird doesn't allow me to have more than two email addresses stored, I can't keep all of them without having multiple copies of her contact card. If the cards allowed for any amount of information for Cards (Being able to have 13 addresses listed would be nice, if it was necessary), then Thunderbird would be a perfect PIM and email-client. As of now, however, I use it because there's simply nothing better. Reproducible: Always Steps to Reproduce: 1. 2. 3.