back-tack 4 signups - HOW-TO

Eeek I've just had a realisation that we might not have made it clear exactly how to sign-up this time.

To sign-up for this back-tack there will be a post here on the 30th which has a form embedded in it. If you'd like to participate come and fill out the form. Once we've received 250 sign-ups close or on 4th October, whichever comes first.

Thanks and good luck!