Gmail was lacking some contact fields that makes the life bit harder when you sync your Outlook or OS X Address book with Gmail contacts. Gmail will put all these extra fields under the note section which you or Gmail dose not have much control over it.
Gmail fix this by adding some extra fields to support Outlook, Outlook express and any other email.
" We updated the standalone contact manager with this improvement last month and now it's available in Gmail too, with support for Outlook, Outlook Express, Hotmail and Yahoo in CSV format, and OS X Address Book in vCard format. "
Why not organize all the contacts in Gmail where you can access it from any where and sync it with other devices or Software.