This is brilliant. I've been wanting UPS to add something like this themselves.<p>They've focused on the social aspect, which is great, and would be a perfect fit for reddit's current secret santa project. However, I think the applications in traditional e-commerce have more widespread potential.<p>For instance, I frequently purchase parts from dubious vendors on pricewatch.com, and I would love to give them a SendSocial address instead of my real address. If its easy enough, I'd use that address for everything I bought online from Amazon to eBay.<p>Design is very nice too BTW. I like the subtle 4chan reference in the main graphic too, fits the target audience.<p>Edit: Just noticed its only available in the UK. That's too bad, I hope it comes to the US soon.<p>Edit 2: Just noticed the nav links have no anchor text. If you're using Firefox, goto View -> Page Style -> No Style, and you'll find the page isn't very usable.