Now that I am in the process of having the iOS and Android apps built for my website, unlike most of my current members who I know from Facebook, I anticipate that I will have a lot of new users who I will know absolutely nothing about. So approving their CSNet membership requests will be a very questionable endeavor, because it potentially opens the door to possible scammers, spammers, pedophiles, etc.
One way to alleviate this uncertainty is by adding an option on the "Registration Settings" page in the AdminCP, so that we phpFox admins can add a new user question.
For example, in my case, I would add the following question/requirement:
"Please provide the URL for your account on another social network in which you participate so that we can learn more about you before approving your CSNet membership request."
The new user would see this question when they sign up, and they would have to enter the URL of one of their accounts on another social network. The phpFox admin can then visit that URL to learn more about that person, BEFORE they approve that person's membership on their phpFox site.