I would like to be able to easily identify contacts that I have imported from
a mobile phone with, for example, a tag. I should be able to remove the tag
should I so wish or add the tag to other contacts already existing in the
contacts folder. Finally I would like to be able to 'export' only the tagged
contacts back to my mobile, which may infact be a new mobile.

I know that many mobiles have address book applications but they tend to be
vendor specific and don't allow easy 'bulk' movement of contacts between
phones.

many thanks