Hi Guys, I had buy a hosting and had a Dedicated IP. LOL And i want to hosting 4 sites. when I add a domain XXXX.com to my hosting, it add a subdomain XXXX.maindomain.com automatically. The maindomain.com is one of my site's domain and linked to my hosting package. I'm afraid that the SEs will index the sub domain XXXX.maindomain.com and XXXX.com. If SEs will to consider the XXXX.com as parts of maindomain.com? Will it to effect the SEO, keywords ranking and PR? Best regards!
Disallow XXXX.maindomain.com using robots.txt, then it doesn't effects your domain at all. If not, it may effect considering several other factors like duplicate content, niche and etc.