I like the idea a lot but when I go to the demo profile, I can highlight the redacted text with my mouse and see the person's name. Is that intentional??
I tried reloading and it was indeed a random name. Although, not sure why they did this, people could very easily be turned off from using this because they didn't see the hover text.
In the interests of getting this thing shipped we decided to hide the text with CSS, but replacing it with an SVG is at the top of our priority list :)