Developer reply by Geoff Lankow
Rated 5 out of 5 stars
Excellent add-on, does a great job with re-sizing the images, but recently it is also croppign the images and losing key portion of the image. Not sure what changed or what interaction with iPhoto/Thunderbird may have changed how it works.
This review is for a previous version of the add-on (2.6).Sorry, I broke it. I don't know how long it's been broken or how I never noticed it, but it's now fixed and v2.6.1 is available. Click on "view all versions" at the bottom of the addon page if a reviewer hasn't got to it yet.
To create your own collections, you must have a Mozilla Add-ons account.