What are your thoughts on the best domain structure. For example, let's say I want to target "lose weight acai berry" does it make a difference with the se's if i use hxxp://loseweightacaiberry.com or hxxp://lose-weight-acai-berry.com Does one version get better results that the other? Also, would a subdomain configuration work better if the main keyword domains are already taken? Example: lets say acaiberry.com is taken, would acaiberry.loseweight.com have the same result with the se's? What are your thoughts and experience?