The older version of matrix - currently available at http://matrix1.itasoftware.com http://matrix1.itasoftware.com - had a not-so-inviting page asking you for a

The older version of matrix - currently available at http://matrix1.itasoftware.com http://matrix1.itasoftware.com - had a not-so-inviting page asking you for a login if you had one, but never required it. There's a "Log in as a guest" link that gets you to the same page you'd have as if you had registered as a typical user. The new version, http://matrix.itasoftware.com/ http://matrix.itasoftware.com/, has no such login requirement.