referring traffic means traffic that you have gained from other sites linked to you except search engines. For example social bookmarks,article directories or ...
The traffic/visitors who landed on your site through a referral/redirector is termed as referring traffic. These visitors are mainly the visitors of another sites who have been referred to your site through a back link on their pages. Regards, RightMan
If the visit is not direct and it is not from SERP, then it is from some other website which have a link to your page. Any other site have a link to your page is called a refferring site.
Check the source and maybe someone came from google.com/your-profile-page or if you left comments and link on google webmaster blog and someone hit it to check out your website.
Assume your website is A.com . Another website that is B.com and give you the link. When a visitor from B.com to your website. That's the referring traffic
For me, receiving some amount of referral traffics means that there are certain promotional tactics which are getting effective in some way.
Referring traffic is the traffic that come from the sites that link to your site. It is one of the most important traffic source except search engine. You can view which sites bring huge traffic to your site in Google analytics's referring traffic, so that you can promote your product on those sites more frequently.
That means from which website your link got referred and user came to your website by visiting that link..that will help you in promoting your website and it's pages in to those referring websites, so that you can get better exposure for your website.
Referring traffic means the clicks which you get through your back links which you have got through different sources like articles, directories, social bookmarking etc.
There are 3 kinds of traffic which is generated through SEO or any PPC for every site. Direct Traffic - When somebody knows your site URL and open and access it. Search engine traffic - When somebody visited on your site through search engines which may be paid(sponsored link) or free. Referral - When somebody visited your site via any other site where you have backlink on that site. I hope this will help you
Analytics can tell you about your website, and one of those things is where your visitors arrive from.