I have a website in a very competitive niche and I want to boost its PR and Domain Age by 301 redirects. I have read that you can inherit the properties of multiple sites which are 301 redirected to your main site. But at google results searching for the main site(search domain.com) will show the pointing sites(as in case of fake PR), or the main site. Also at other places(search results for kws other than domain.com) will the main site show as it did originally.