I knew I could make good use of this tool for a current project, and bought in without hesitation. I immediately put it to the test with some tough crops.

Short Answer: Clickmajic will do a very good job, instantly, for 80 to 90% of images.

Big Plus For Me: The API will allow me to crop images uploaded to a website. (with some custom coding)

Caveat: It is a "quick fix", but not able to match the quality of a skilled photo editor for jobs which require truly impressive results. It's better suited for website work than a tool for high resolution print designers.

Detailed Testing Notes:

The vast majority of my cropping work is removing backgrounds from headshots and photos of people. I uploaded some of my personal photos, and compared side-by-side with my manual cropping of the same photos. My detail work was cleaner, but unless I zoomed right in, the difference would barely be noticed. Thumbs up from me!

Before this, I'd either have to do it myself (20-ish minutes of work) or send it away to a service (which took 24 hours to return the file). I can see how Clickmajic is going to be very helpful.

As Mark pointed out in his video review, the biggest challenge of any close crop is long hair in the wind with an uneven background. [gasp!] I really gave it a challenge and the result was... okay. It did a good job of accurately finding the hair, but the crop is made with faded edges, which leaves a lot of "fuzz" around fine hair lines. The background color will remain as a fringe around the hair. If your new background is a similar shade, it will look good, but the fringe would be noticable with drastic background changes.

That said, to do that job to high standards could take an hour of manual work. So... pick your battles.

I also tried to throw it some wrenches with images which did not have a clear subject. (ie: a group of people standing apart from each other, or an image without space around the subject.) In those cases, it just didn't do anything and returns an error message.

Another challenge was two people in a swimming pool. Though it was far from perfect, it surprised me with a pretty good result! I tried fixing the bit it cut out, but I found the built-in crop editor (erase/replace brush) to be real clunky to use. I'd rather fix it using my own desktop editor software.

Nit-picky suggestion: Every download file is named 'download.png' ... I'd love for that to keep the filename as it was uploaded and append '_cropped'.