Reply To: Help: User limit
you need to read up about scaling wordpress and not just buddypress tbh, i have been doing a good bit of research on the matter recently, there is alot to it! I suggest as henry and shane says, you need to create a good infastructure of servers, i would suggest getting a setup where you can have one server running as a dedicated database server independently whilst having a few other servers for specific tasks within the network such as file servers and firewalls etc, there are solutions out there but they can be costly and you will need to be a dab hand with linux to pull it off as a one man team, maybe the best way to deal with these issues is first get to the point where you will need to worry about doing it, if you had that sort of regular users within your website im sure you could hire a team to do it with the revenue it would generate if setup right.