Google’s Matt Cutts gives us some insight as to how Google crawls the infinite web and uses certain basic parameters to determine the canonical source of content.
While he admits that Google does its best to give credit to the right source,they too at times make mistakes. Google is constantly trying to improve their algorithms to better their accuracy.
Being the first to ‘ping’ a new post so that it goes to a real-time feed, having a high page rank, being the oldest authority on a subject, and not ever engaging in content scraping are ways by which you get Google to trust your site or blog more.
If writing good quality SEO content proves hard, get a professional SEO writer or web writing service to help you out!