say i have forum named perlwhatever.com my preferred keywords are "perl forums" Is setting up subdomain like forums.perlwhatever.com good idea ? Means, keywords: perl forums is it better perlwhatever.com or forums.perlwhatever.com ?? Also, is it possible that subdomain hurts the ranking and SERP ? Thanks
I think the main root domain will have a stronger PR than the subdomain thus giving it a better chance of ranking in my opinion. Try the usual SEO/link building roots on your normal root domain would be my advice
I have seen several discussions on whether the forum should be in a subdomain, root, or folder. To get the best keywords, either have the forum in a subdomain or folder. But, I have seen at least one forum that was moved from a /forum folder to a subdomain, and the urls to the new location were not switching over. So once you make your decision stick with it. As for it helping you get a good ranking, I have seen both configurations rank well in google.