Hey BlackHatters, I really need your advice. I have a health-related domain name which can be used to promote different sub-niches (e.g. weight loss, skin care etc.). Do you think that I should use the same domain for every sub-niche by creating new sub-directories (not sub-domains) or buy a new domain that includes the keyword for each sub-niche? Are there any obvious pros and cons to both methods when it comes to SEO? Any input will be much appreciated. Thanks!