Q: Does signing in to a site-wide account give access to every forum on the site?

Site-wide accounts are one of the new features in version 6. They complement the existing login security tools, but do not replace them (or circumvent them!). Signing in with a site-wide account does not automatically give you access to anything you didn't have access to before. So how are they used?

If you have an existing group that is set up to use "individual accounts", normally you specify each account by providing a full name. If instead of providing a full name you put in an email address (matching a site-wide account), that will give the user access to that group. So essentially, it's saying that the user now has access, without us having to create a separate (per-group) account for them.