Brankica, Excellent list. The only one I could think of is mentioning through email to family and friends. Example: Hey Guys and Gals, Sorry I haven't been in touch for a while. I've been working my tail off building something I hope will be special. I would appreciate it if you could do me a huge favor. My blog is still new and I need some opinions on where it can improve. Let me know the good, bad and ugly:) Also, can you pass it along to some of your friends? The more opinions the better idea I have at what works and what doesn't. etc. Thanks for the post. Live it LOUD!
We are in the SEO industry for a while now, wearing many hats: digital marketers, tool developers, advisers, researchers, copywriters, etc. But first of all, we are, just like you, site owners. And we’ve been through ups and downs regarding organic traffic, and we were in the situation of trying to understand why the Google traffic dropped dramatically at some point as well. Having all these in mind, we’ve thought of easing your work, and we’ve put together a list with the top 16 reasons that can cause sudden traffic drop, unrelated to Google algorithm changes or penalties.
Wow, great post, Brankica!!! I've used Flickr in the past and while I haven't gotten much traffic from it, I've gotten a ton of backlinks. Like there's this one photo in particular that I tagged as "SEO" and included a link in the description back to the blog post I used the photo in. I guess there are lots of autoblogs that scrape stuff like SEO-related images, and since they scrape the description, too, I get lots of automatic backlinks. Sure, they're crappy backlinks, but still backlinks :)
The amount of dark social that comprises one's direct traffic is going to vary. For example, you might be diligent about incorporating tracking tokens into your email marketing campaigns, and asking your co-marketing partners to do the same when they promote your site content. Great. You won't have a huge chunk of traffic dumped into direct traffic that should really go into email campaigns. On the other hand, perhaps you're embroiled in a viral video firestorm, and a video on your site gets forwarded around to thousands of inboxes ... you don't exactly have control over that kind of exposure, and as a result you'll be seeing a lot of traffic without referral data in the URL that, consequently, gets bucketed under direct traffic. See what I mean? It depends.
Next, you should specifically type search terms into the web for blogs posts on Facebook Marketing. Pick high authority blogs strategically (like posts appearing in Google’s top 10 for your subject) and write a detailed comment about results from your study. If you get lucky then these posts will be shared across social media and will direct traffic to your website.
You could spend a week researching and writing a 3,000 word in-depth guide only to find that in a month its traffic is being eclipsed by a 300 word blog that took you one tenth of the time to write. That little gem could start ranking for some pretty valuable keywords – even if you never planned for it to. Give it a makeover and you’ll see your rankings on SERPs (search engine results pages) and organic traffic values soar. We’ve seen this strategy work with both our clients and our own website. Big bonus: it’s actually an easy strategy to pull off. Here’s how:
A few links down and I've noticed that Brian has a link from Not bad! Turns out that his content has been referenced within one of WordPress's codex posts. If I were to reach out and offer some additional insight, citing one of my articles, there's a chance I could bag a similar link, especially considering they have a 'Useful Resources' section.

Brankica, Very comprehensive list there. Can't think of anything else :D RT! I think the traffic sources that I hardly use is answering questions. I find that traffic conversion there is poor for me, so I don't focus too much on it. I think of all those in the list, focus on those that gives you the best kind of traffic. Forums can be a particularly useful one especially when people are there asking for help. Answering their questions and giving them a link that benefits their query is one good way of getting the right kind of traffic.

Google claims their users click (organic) search results more often than ads, essentially rebutting the research cited above. A 2012 Google study found that 81% of ad impressions and 66% of ad clicks happen when there is no associated organic search result on the first page.[2] Research has shown that searchers may have a bias against ads, unless the ads are relevant to the searcher's need or intent [3]
Good content is not enough anymore. Your articles have to be outstanding and must be much better than the one of your competitors. Don’t write just and useless articles just for the sake of publishing something new. Instead, concentrate on quality and make your content stand out from the crowd. The competition is increasing as we speak, and quality will be the only way to succeed.
If you’ve recently modified your on-page copy, undergone a site overhaul (removing pages, reordering the navigation) or migrated your site sans redirects, it’s reasonable to expect a decline in traffic. After reworking your site content, Google must re-crawl and then re-index these pages. It’s not uncommon to experience unstable rankings for up to a few weeks afterwards.
Now, it is not that these sites are not interested in Google users. In fact, they have hired us to help them increase their share. However, they are getting so much traffic from sites like Facebook that it seems there is less urgency about attracting this traffic and less willingness to change the site to meet organic standards. Not long ago, sites would urgently and unquestioningly abide by Google’s standards to court that traffic.
The Google, Yahoo!, and Bing search engines insert advertising on their search results pages. The ads are designed to look similar to the search results, though different enough for readers to distinguish between ads and actual results. This is done with various differences in background, text, link colors, and/or placement on the page. However, the appearance of ads on all major search engines is so similar to genuine search results that a majority of search engine users cannot effectively distinguish between the two.[1]
Thanks, John :) You are right about the forum, if you are answering some questions that you don't really get into but are only trying to self promote, people can tell. That is why genuine people have great traffic coming from forums, cause everyone can see they are trying to help. I have a rule for myself, where ever I try to build traffic and establish myself as a person that want to help, I never post links all the time. I only do so if it is really related to the question. I think that is why I have success with it. I think you could rock with Reddit because your art is great. Can't wait to see what results will you have with it. I am also thinking that Digg and Flicks might me good solutions for you.
Brands hold a wealth of customer information that may often not seem applicable to SEO — and many times, it’s not. However, if you’re working with an SEO agency, sometimes sharing this knowledge can provide the missing piece to the puzzle. Knowing something as simple as “Consumer preferences are shifting around the color black” could help explain why your traffic is down if your products are often paired with black shoes. Sometimes it’s as easy as connecting the dots.

Let’s say you wish to block all URLs that have the PDF. extension. If you write in your robots.txt a line that looks like this: User-agent: Googlebot Disallow: /*.pdf$. The sign “$” from the end basically tells bots that only URLs ending in PDF shouldn’t be crawled while any other URL containing “PDF” should be. I know it might sound complicated, yet the moral of this story is that a simple misused symbol can break your marketing strategy along with your organic traffic. Below you can find a list with the correct robotx.txt wildcard matches and, as long as you keep count of it, you should be on the safe side of website’s traffic.
Organic traffic is the primary channel that inbound marketing strives to increase. This traffic is defined as visitors coming from a search engine, such as Google or Bing. This does not include paid search ads, but that doesn’t mean that organic traffic isn’t impacted by paid search or display advertising, either positively or negatively. In general, people trust search engines, and sayings such as “just Google it” reinforce that humans are tied to the search engine. Thus, paid search, display, or even offline campaigns can drive searches, which may increase organic traffic while those campaigns are running.