It is not so much about having a photograph of oneself, more about the member's interests, experience, competence; and age! It is all very well members claiming that just because other members are young they know nothing. That is obviously not true.If the young post sensible writing, that is fine. But very often the posts are not only without much sense, but are "fluffy". The other information that can be helpful is Location; just town and country is enough. I seem to be forever telling the young that a "personal" teacher is better than one on-line. By profiling their location they may find a personal teacher living close!
When there is absolutely nothing on the profile nobody can judge if the member is worth replying to, or is a complete nutter!