I am currently doing SEO on a site about STDs (Sexually Transmitted Diseases) and have each of the STD categories referred to by subdomains. I am hoping that by creating a subdomain STD.domain.com that it will help get more search engine visibility. I have chosen to use a frame redirect to point each subdomain to each of the site categories. I have chosen this over http redirect since frame redirect allows me to enter title, description, and keyword info. If you visit the site, www.theSTDforum.com, you will notice that I have each STD category linked using the subdomains. I am wondering if this makes any difference than instead just leaving the category links as domain.com/category The reason why I linked them this way is so that I am hoping google can find these sub-domains and list them in google. Anybody know how google treats frame redirects in general? Thanks.