what is "Galaxy Effect" is SEO i search and i just find out that it is link to SEM. any one have any idea?
Never heard of it until you brought it up. Turns out it's a term coined by a guy in an article for the Search Engine Journal -- http://www.searchenginejournal.com/for-keyword-targeting-in-paid-search-beware-the-galaxy-effect/27788/
Basically, he is saying that you should always have a broad reach that expands beyond those who are already loyal to you.
