I put together a Nautilus plugin for adding a 'Tags' tab on the Properties page for any file. It acts just like tracker-tag, you can add and remove tags to and from files (batch works..mostly). Anyway, attached is the plugin, just copy it into your ~/.nautilus/python-extensions folder and restart nautilus. Tracker from CVS is required. It's just a first shot...comments welcome.
Attachment:
tracker-tags-tab.py
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