We've had a lot of repeated issues with Spammers lately. Normally we just delete them when we find them and ban the users. The pace of this current wave of spammers is too high for us to just hit them as they appear. Too many people are being assailed by all the mahrlect "male enhancement" advertisements. Thus, we have had to reenact our old security system last used during the kitchen cabinetry invasion of 2013. New members' posts will not appear until a moderator approves them. We have a very active moderator team spread across many time zones, but we don't have someone watching the moderator queue every second of every day. It may still make take a few hours before one of us gets around to approving your new posts so they can become visible to the public. I don't know what the programmed minimum is but once you reach a specific post count, your new posts no longer need moderator approval.