A new plug-in called iP2F from Tagtraum Industries brings iPhoto users to easily upload pictures directly from iPhoto to their Flickr accounts.
iP2F allows you to resize, rename, describe and tag your images with smart, Mail.app-style tokenfields before uploading. The plug-in also lets you create photosets and add images to existing sets and pools, according to the developer.
The plug-in costs $14.95 — a 14 day trial is available.