When used correctly, PPC can be highly efficient. Since you only pay when people click and you can target people looking for specific terms, it can be an excellent means of bringing people to your site. Even more importantly, PPC ads have been shown in some studies to even boost visibility and clicks, particularly if your organic result starts to slip further down the page. This can help improve brand reach and maintain a strong reputation.
New zero-result SERPs. We absolutely saw those for the first time. Google rolled them back after rolling them out. But, for example, if you search for the time in London or a Lagavulin 16, Google was showing no results at all, just a little box with the time and then potentially some AdWords ads. So zero organic results, nothing for an SEO to even optimize for in there.

Good question, for most directories I use they ask for mobile number to send a message of verification, for the ones which phone you for verification inform the company before hand to tell their customer service people to be ready. I know the bigger the company the more tricky these things get you just have to find out what works best to answer the calls even if they give you a direct number to use. 
You can also use organic to increase audience engagement with your content. For example, let’s say you’re a ticketing website for sporting events and you know that some of your followers are rugby fanatics. If you have a new blog interviewing Dylan Hartley (current England captain), then it makes sense to personally contact them (or at least key influencers) via their preferred social network and tell them about the blog, and ask them to comment/share. It’s personal and increases the chance they’ll see/read your content.
Melissa: I think with thought leadership there’s a variety of different ways that you can go about this. But one of the best ways is really just utilizing that blog feature, the LinkedIn Pulse, part of LinkedIn, because you are already connected with the best audience possible. This is your business network, right? And then every time someone in your network likes or engages with your blog post, it amplifies it to their network. It’s like having a built in audience for your blog without all of that groundwork of creating your own blog.
All your content, social media, brand, and other online assets that you develop in that process are there to stay. And they keep going up in value as time goes by. Even if you stopped investing in organic search, these assets would still be working for your business. You’d get traffic because you’ve built an ecosystem that fuels itself. Now imagine that you’re generating traffic and you’re paying little to no money for it. Your cost per organic visitor will decrease by many factors as your return increases. Bear in mind that this is a cumulative effect that happens over time. Still, it’s a fantastic position to be in.
To find the right people I downloaded a list of some of the most popular users within the community. To do this, I used Screaming Frog SEO Spider to gather a list of all the URLs on the website. I then exported this list into an Excel spreadsheet and filtered the URLs to only show those that were user profile pages. I could do this because all of the profile pages had /user/ within the URL.
It is important to target keywords that your target consumer is likely to search for while looking for the product or service that you offer. For example, if you are an accounting firm located in Miami you would not want to target a general keyword such as “accounting firm.” Not only is it a very difficult keyword, but also you will be attracting visitors from all over the globe. Instead, you would want to target a more precise keyword such as “accounting firm in Miami” or “Miami accounting firm.”
You job is to make your fanbase feel part of a community. It’s equally important that you respond to all queries and complaints in a timely and polite manner. This will show your customers that you genuinely care. Address any concerns that your fans have about your product and/or service and do everything you can to address any issues they might have. Use a social media monitoring platform like Hootsuite to keep track of all of your social media interactions.
So, closely monitor and analyze all yours, and your competitor’s social marketing activities. Find the kind of posts your followers and target audience find interesting by analyzing social channels, campaigns and posts.  Figure out what works best for your brand in a given scenario. Based on the inputs you gain from analyzing your social channels, craft the social media marketing strategies for your company.

Secure (https) to non-secure sites (http): Since Google began emphasizing the importance of having a secure site, more websites are securely hosted, as indicated by the “https” in their URLs. Per the security protocol, however, any traffic going from a secure site to a non-secure site will not pass referral information. For this issue, you can correct by updating your site to be secure through a third-party SSL certificate.
The position of a link on a search results page is important. Depending on the search term, organic search results often make up only a small portion of the page. Since ads are at the top of the results page, on a device with a relatively small display -- such as a notebook, tablet or smartphone -- the visible organic search results may consist of only one or two items.
Lynn, you have one of the best sites for affiliate marketing that I've ever seen. Just read your interview with Rosalind Gardner and found some interesting nuggets. Marketers should note the intuitive and spontaneous way you approached a niche and keywords. This is usually where "paralysis analysis" begins … some spend weeks with keyword and research tools until there is no "creative energy" left to build the site.

Well, yes and no. Sure, you can get hit with an algorithm change or penalty that destroys all your traffic. However, if you have good people who know what they are doing, this is not likely to happen, and if it does, it is easy (in most cases) to get your visits back. Panda and Penguin are another story, but if you get hit by those it is typically not accidental.