Pixelpipe iPhoto Exporter... Liberate your media with Pixelpipe and get your photos out of iPhoto and to your favourite social networks, blogs, and photosharing services. With support for over 50 different providers, the choice really is yours.
Supported services include: Picasa Web Albums, Flickr, Facebook, Friendfeed, Blogger, Wordpress, Twitter, Kodak, LiveJournal, Photobucket, SmugMug, Tumblr, Webshots…and many more!
The login culprit is Free Flickr Exporter (FFXporter), on which the PixelPipe Exporter is based. By disabling FFX via the Get Info window, the PPX will login without problems.
To their credit, PixelPipe support was very quick with a response.
I downloaded this and installed it. When I went to export in iPhoto the dialog came up and I clicked the Login button. I told me there was an error but gave me no clue as to how to register. So at this point it is useless to me.