I'm wary of this without knowing exactly how your profile would be anonymized. I work in a very small niche and even if the company names are hidden, just seeing a list of job titles, time frame, and my skill set would really narrow me down. If my location is listed, that absolutely pinpoints me, as I'm the only person in my niche, in my area.

I didn't sign up, so I don't know if is possible to see and edit your profile before it goes public or not. But giving me that level of control would resolve most of my concerns.