We currently have 3 sites built on WordPress that have little to no blogging capabilities. Currently, all published posts show up on a /category page which does not resemble the traditional blog format and is not aesthetically pleasing. We would like to have a more traditional blog and are considering installing a second wordpress theme on the site which will strictly be used for /blog and all the posts. My question is will having the second WordPress installation on the sites hurt us in any way on the SEO front and if we go this way should we place the install in a subfolder or on a subdomain? Is there anything else we need to worry about with making this transition? Thank you in advance for the advice! Patrick