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Thanks very much, Mark! This is really useful - I'm off to create my landing page with your advice in mind.

Thanks Brent, Keri. Following Brent's comment, I tried this using Chrome on a PC (previous issue was through using Chrome on my Mac) and the SEOMoz chrome app is showing the correct information for the site - no Doubleclick info! So, perhaps it's a Chrome version issue, perhaps it's a Mac issue, perhaps it's something to do with Doubleclick... I'm sure the Help Desk guys can advise.