I've been looking for a way to upload to Shutterfly efficiently from Aperture. This program seems to work like a charm. Stable and easy to use. However, $30 seems a bit steep to me for what can be done, admittedly much less reliably, using various free browser plug-ins (including Shutterfly's). Though I use Aperture, I'm an amateur photographer, not a professional. I'd pay $15 to support the shareware though.