<--- this site explains & is still valid
Order your FREE Big Pink T-shirt by logging into your dotMailer account (follow this link to open a free account https://www.dotmailer.co.uk/trial_account.aspx
account first) it's meant for business but anyone can sign up really if you create a business name.
When you have your account - you can order your tshirt.
I've done this - had almost no spam (the 2 emails i had would have been relevant/interesting if i had a business!) and the tshirt arrived today - it's really really good quality if a little on the large size. And their slogan isn't to big on it / would be easily taken off.
Something similar was posted recently and folk reported It won't work with a yahoo or msn email addresses - fake @gmx.com addresses did work - you don't need to verify by email so it doesn't really matter. Also if you give a valid phone number apparently they do call but it will accept 0141 000 0001 etc numbers.
Before anyone feels like we're cheating - they donate cash to charity for every t-shirt claimed so there's a double reason to go for this one.