Whenever I make a niche product store(aka BANS), I always buy a domain for the brand name of the product(e.g. brandname.com) plus 2-3 domains/sites that are fully optimized and act as mirrors/shadow domains. 90% of the traffic comes from the shadow domains. Now the content of the brandname domain is 100% exactly the same as one of the shadow domains. I do not intend to really make alot from it since Im relying on the shadow domains, its just there for SE keyword representation. The brandname domain didnt rank until after 2 months I just run a search today and got totally surprised after seeing my brandname site SERPing (rank #4) for a very competitive keyword for my niche. This is an effin amazing. Im not sure if google is getting dumber or what! How about you, ever experience the same?