Create a landing page for each user. Add new fields such as name and description. Add a form for entering and editing the profile.
[Hold off on photos for now, please. -@Jsalsman]
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@Jsalsman wrote: we aren't going to require user registration or logins. Reviewers participating in reputation management systems will sign their review comments with a unique identifier. The failure mode of impersonation can be overcome by having that unique identifier be, include, or point to email to which confirmation is sent.