google is one of the major search engine in the world. Every person search relevant information by typing particular keypharse in search box. google rank site only with strong content and keywords rather than design or something. google spider crawl the updated content with in short span of time.Any site holds a rank due to regular updated content by inserting strong keywords . Every body think that by regular posting articles google crawl their site. yes it will crawl but no rank in the scale 1-10 .
Well there is 100+ factors that Google is using to rank websites and i think that posting articles will create a backlink from related webpage to your website and it might even be distributed by other webmaster/websites as well. The most important factor to rank high on Google is to get backlinks with your keywords in the anchor text from relevant websites and authority theme related with high pagerank sites, as well as the onpage optimizations.