FlickrExport 4.0 for Aperture
FlickrExport 4 has a less-crowded, tab-based interface, and it lets you update the metadata of photos that are already on Flickr. Hopefully, this ability to fix things later will encourage me to post more photos; previously, there was the incentive to wait until the headline and tags were perfect. I don’t trust Aperture’s built-in support for Flickr syncing, nifty as it is in theory, and am content with the lower-tech-but-more-control approach that FlickrExport takes.