Combining 'Hide Folders 2012' with 'Hide Folder Ext' possibly into 'Hide Folders Suite', you would then be justified in maybe charging 'slightly more' for the one 'Suite'.
OpenID is service that allows you to log-on to many different websites using a single indentity. Find out more about OpenID and how to get an OpenID enabled account.
Hide Folders 2012
All the ideas and discussions