A picture of someone pretty much immediately reveals age, sex, race, and could easily reveal religion (think a muslim or sikh) and disability status. Which pretty much covers the list of things you're not allowed to discriminate against.
Maybe its worth it for some. I don't think its worth $10/month or even a one-time $10 cost.
Side rant: Its seems that everyone is trying to build a subscription based business these days. What happened to just selling a product for a fixed price and be done with it.. why do people want to hook the customer onto some metaphorical treadmill. I hate that MS has started doing that with Office, adobe with Photoshop etc..
When I am doing interviews I like having a paper copy of the resume to that I can get inspiration for the "discussion" part of the meeting.
I've heard (and read [1]) that in certain European and Asian countries it's customary to include a photo with a resume, so perhaps that's why the option was provided.
1. http://www.expatarrivals.com/article/how-resumes-differ-from...
Pretty standard practice in Germany.
-Do people really put their photos on their resumes??
-Given that resumes are often printed and reviewed in black and white, I think that would undo a lot of the effort that went in to the designs of the templates.
In spite of that I think the spirit of having a resume that doesn't come from a Word-provided template is worthwhile for job seekers.