Brajesh,
My community has been down for almost a year now and while I had around 1100 members, I only have around 500 comments. I want to "reset" my users and members list for the new BP launch. This is a two part question.
1. Is there any type of mysql query that I can use to remove any users from the wp-users table that do not have any comments associated with them? I don't just want to remove everyone because anyone who used to be active I still want them to have their account and I don't want to lose the owner of the comments.
2. I found an "undocumented" trick to hiding someone from the members list by setting in the wp-users table their status to "99" instead of the default. I'm curious if you know about this trick and if there's something wrong with this method and if so, is there a way that a plugin could be written to set a "hide from members list" toggle in the adminbar so that just like your stealth mode plugin, I could allow them to "Opt in" to rejoin my community since it's been down for so long? I'm trying to avoid just setting everyone to "99" and then saying "email me to unhide yourself."
Thanks for the suggestions.