People love to share photos, articles and videos that they find interesting. When people share your content, it can increase your brand awareness exponentially. If it is difficult for people to share items on your website, they are less likely to do so. You can add some simple share buttons and encourage your visitors to spread the word. There is addthis.com, sharethis.com and most content management systems (CMS) have their own tools to add sharing buttons to your website as well. Check it out and don't forget to "like", "retweet" or in some other way thank your sharers!