Before you even consider joining the Marc Ecko 'Branded for Life' campaign, I strongly encourage you to read this VERY carefully.
In an interesting marketing stunt, the Marc Ecko 'Branded for Life' campaign is willing to offer customers 20% off everything from the brand for life -- if you get a tattoo. I don't even mean temporary, the ink you receive must be permanent and it must be one of the two logos seen in the attached picture, which acts as somewhat of a coupon. You are allowed to personalize both images. Once you get the tattoo, bring it to any Ecko store, show it off, and you'll get the discount.
So if you really, really -- and I repeat -- really love Ecko clothes, I suppose it wouldn't be too bad of an idea to join the campaign. Otherwise, I'd just stick to lining up during Black Friday and Boxing Day.