Managing Your Users... Right and Wrong

Is your user management an afterthought? For most companies building technology systems, how to manage users - the process of creating, managing, grouping and linking accounts - is bolted on later. After all, you fully expect your users to spend the bulk of their time using your service, not logging in to or managing your service! So you use some reasonably standard user management library, and when you have to worry about groups and organizations, you sort of bolt it on.