Address book

[aj.Saraf]

Hi

Im looking for an address book service preferably online which would let me tag a contact with multiple ids. E.g multiple gtd projects.

I would like the ability to send email to the folks with various tags as a group. Please let me know if you have used something similar.

[cfoley]

Most address books allow you to crate recipient groups. Is this different from the functionality you are after?