Is it possible to create a forum 'by invitation only'? The only other forum, which I believe is a custom forum built in Germany, is www.internations.org. There is a hover-over or window that says 'membership is by invitation only.' In other words, my forum is related to a specific niche and the purpose for this pop-over or 'window' will be to 1. prevent the wrong type of individual to come into the forum and 2. to have the forum spread virally by one person telling another, etc. and 3. by making people feel 'special' that they have been invited. It's like being a VIP without having to pay the price. Does anyone know if this can be done and do you know developers on here that can do this? Thanks all!