The big other search engine people recommend is, of course, Bing. Bing and Yahoo have something of an alliance, with Yahoo taking their data primarily from the Bing index, so appealing to either one is the same as appealing to both. SEO for Bing is a little different than it is for Google, though. Exact match keywords tend to have greater weight, for one thing. Bing also has a bit more of an emphasis on links from edu and gov sites.
As we mentioned before, when someone finds your site via a link on a social network, they'll be bucketed under social media as a traffic source. This could include someone tweeting out a link, or it could include you posting a link to your Facebook page. If it's you doing the posting, you can also add a tracking token before posting to track those links as part of a larger campaign for you to analyze later!
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. Research has shown that searchers may have a bias against ads, unless the ads are relevant to the searcher's need or intent 
Ezinearticles.com, although hit by the new Google algorithm, it is a great source of highly targeted traffic. The bounce rate of visitors I get from EZA is always less than 20%! Choosing a good keyword for an article can result in incredible amounts of traffic. I have been receiving a lot of traffic from a single well written article for a year and a half now!
Whether location comes into your SEO strategy really depends on the nature of your startup. Airbnb certainly wants to be showing up in local results, and the likes of Uber, Skyscanner and Deliveroo all rely on location data to connect with users new and old. This is a crucial factor in terms of relevance for suitable searches and you may need to consider this if location plays a key role in your startup.
When you run an email marketing campaign, we hope you're including links in that email that lead recipients back to your website -- to read more content, convert, whatever. When you take a look at email marketing as a source of traffic, you'll be able to see how much traffic is sent to your website due to email marketing campaigns you've sent out. That's how we found out, for instance, that driving blog email subscriptions was extremely important to the growth of a business blog -- because many of the visits we receive each month come from subscribers who get pinged in their inboxes that a new blog post is published, prompting a click through to the post! Just be sure to include tracking tokens in the links of your email, otherwise the clicks won't be properly bucketed under the email marketing source.
Blog comments have a number of sources of value, and traffic is just one of them. By monitoring your competitors and your betters, you get a keen sense of what the industry is doing and where trends are going. You leave valuable comments and people take notice, including industry influencers and possibly the owners of these top-tier sites. You create a gateway back to your site, and even though the links are nofollowed, they’re still links for people to click. You also build a personal reputation as a commenter around your industry, raising sentiment and value.
Content is one of the 3 main Google ranking factors. As a matter of fact, having a blog can help you get your content indexed faster. An active blog – relying on qualitative and insightful content, and backed by authoritative links – will help you improve your rankings and thus your organic traffic. Also, long-form copies (above 1200 words) tend to rank higher and be crawled more often.
Plan your link structure. Start with the main navigation and decide how to best connect pages both physically (URL structure) and virtually (internal links) to clearly establish your content themes. Try to include at least 3-5 quality subpages under each core silo landing page. Link internally between the subpages. Link each subpage back up to the main silo landing page.
If you feel as if your business is being overtaken by your competitors, it may be because they are already taking advantage of everything that social traffic can do for them. Having a Facebook page or Twitter account with a huge amount of likes or followers automatically makes you look more legitimate. For example, would you rather buy something from someone whose page has 50 likes, or someone whose page is really popular and has 2,000 likes? The answer is obvious.
Mobile traffic: In the Groupon experiment mentioned above, Groupon found that both browser and device matter in web analytics’ ability to track organic traffic. Although desktops using common browsers saw a smaller impact from the test (10-20 percent), mobile devices saw a 50 percent drop in direct traffic when the site was de-indexed. In short, as mobile users grow, we are likely to see direct traffic rise even more from organic search traffic.