Does what it says but needs improvement

It is an OK app, and performs quite nicely once it starts running. The problem with big libraries is that it takes ages to compare library data to Flickr data, and it makes resuming upload a big pain in the neck. Also, when you pause upload and want to resume it, you will have to reselect the library, and the workflow seems a bit buggy - hopefully an update to the app would fix this issue.

Zejusz about Backup to Flickr for iPhoto