Find ways to help your customer find ways around common stumbling blocks - "FAQ"s. A subtle tour may not be too bad (think new YouTube). As about customer supp

Find ways to help your customer find ways around common stumbling blocks - "FAQ"s. A subtle tour may not be too bad (think new YouTube). As about customer support scaling at that volume, it is a good problem to have when you do hit that milestone :-) Having said that, do reverse customer support, i.e. preempt their questions by educating your customers. Better yet, get your users to write some of your FAQ's for you and delegate support to your nicer members via some sort of forum.