How to switch off the weekly digest spam, err, I mean e-mail

How does one switch off the weekly e-mail when the unsubscribe link at the bottom leads nowhere and doesn't work?

The link in the email should take you to the correct page (I've just clicked the one sent on Saturday)

There is also a link at the bottom of the forum:

Matt said:
There is also a link at the bottom of the forum:

Thank you. This appears to have worked.