Hello, I am starting to restart doing MFA sites and I have already did the keyword analysis for about 10 different keywords (3 sites) to start off with. I currently have a 4 letter .com domain name that I was thinking of using as a hub type of thing for my MFA sites, placing each different "site" on a subdomain. i.e. mymainkeyword.LLLL.com My question would I see a big difference in the SERPs for having the keyword in my domain (mymainkeyword.com) versus (mymainkeyword.LLLL.com)? My thoughts is that I wouldn't see that big of a difference, looking at blogger and such but BHW is full of more knowledgeable people so I'd like your guys input also.