I have found a bunch of powerful, high search volume, low competition keywords (I have been doing research for a couple weeks now) but many of them have all the relevant TLDs taken (.com, .net, .org)... I was wondering how harder (if harder) would it make to me to rank with the exact keyword + online or store etc, ex: Let's suppose my keyword is "blackhat", but blackhat.com,.org,.net are all taken (even if no site exists on them), Would it hurt much If I went to buy blackhatonline.com or blackhatsource.com or blackhatplace.com? You know what I mean? Does it hurt SEO? Domain value? Ranking power? Thanks!