You want to change a domain name from example.com to anotherexample.com and wonder which is the best way to do that from a SEO point of view? First of all, use a HTTP status code 301 redirect to redirect all your old pages (that means every single one!) permanently to the new ones. After that, check both external as well as internal links to pages on your site and be sure they point to the new domain name. Plus, create and submit (Google Webmaster Tools also helps here!) a sitemap.xml of your site. More on that here: http://webmasters.stackexchange.com/questions/3399/renaming-a-domain-and-preserving-pagerank