I'm pretty sure that's a spammer that somehow slipped the net. Company seems legit. But, signing up just to necro a year-old thread with a short, generic reply, and slipping in a url... Spam territory.
PS, the whole 1st, 2nd, 3rd, 4th, 5th, 6th anniversary gift guideline is more for others giving you two gifts, than it is for you two to each other. It's consumerist nonsense. Stick to the guidelines every fifth year and ignore the rest.