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I was working yesterday on making my WP site quicker (sellingwarnerrobins.com) and after updating the htaccess file to solve some "Leverage Browser Caching" issues I re-ran a scan on Pingdom Tools and am now getting a zero for "Parallelize downloads across hostnames" with a list of 34 items to fix. I did some web searches and when the articles started talking about cnames, subdomains, and hostname distribution it went beyond my capabilities. Are these Parallelize "issues" something a novice like myself can easily fix?  If so, how?

I just did a reverse IP Lookup for both my sites and noticed they were on shared WebServers with 370 and 719 domains respectively. A few domains hosted on each IP looked very suspicious too. Is there an advantage of switching my websites to a private IP from an IP shared on a Webserver?