Product images. If you think images don't play a role, think again. When many consumers search for products in the search engines, not only are they looking at the "Web" results, but they're also looking at the "images" results. If you have quality images of that product on your site -- and the files' names contain relevant keywords -- these images will rank well in search engines. This avenue will drive a lot of traffic to your site, as potential customers will click on that image to find your store.
This way, when you do drive traffic, you know where that traffic is coming from. Otherwise, you're left in the dark. For example, if you do some content marketing on Quora.com or Medium.com, you could use the campaign source as simply Quora or Medium and the campaign medium as content_marketing and the term as the term you're working to rank for. Get the picture? Then, you'll see all the beautiful results directly in Google Analytics and you'll know specifically where your traffic came from.
I find it interesting that you talked about nutrition supplements for athletes. I am very close to launching such a product for enhancing aerobic exercise performance in women (ie. improved times in a 3 mile run).. The product contains no stimulants or exotic herbs. In fact three of the five ingredients are well known minerals, but in forms not found in most multi-vitamin-mineral supplements. The research behind the product comes from me. The credibility behind the research is that I am a professor of human nutrition with over 100 research papers. Now, the trick will be to use my connections and credibility in a business savvy way.
Inclusion in Google's search results is free and easy; you don't even need to submit your site to Google. Google is a fully automated search engine that uses web crawlers to explore the web constantly, looking for sites to add to our index. In fact, the vast majority of sites listed in our results aren't manually submitted for inclusion, but found and added automatically when we crawl the web. Learn how Google discovers, crawls, and serves web pages.3
Content-Delivery Networks (aka CDNs) are a great way of speeding up page delivery across the world. Google and other search engines are inherently concerned about the speed of your site and page content. Use Amazon's AWS, MaxCDN or any number of other tools out there to leverage CDNs along with browser-caching tools like W3 Total Cache, WP Super Cache and others.
Match the message of your PPC and paid ads to your Unique Value Proposition and website experience - If a visitor clicks an ad for a free estimate and the site doesn't match that expectation, chances are they will bounce out. Ads need to match the offerings of your site - not just be outfit with random but popular keywords. Make sure that all things related to your site from the color schemes to the pictures, ads, copy and forms fit the same message. Mixed messages make customers feel lost and like they stumbled on the wrong page.
Every time I write new content I post it to twitter. If you use the right keywords and make your tweet interesting enough you can get a lot of clickthroughs just from people searching. For example if I write an article about SEO and Google I can tag the end of the tweet with #SEO #Google and anyone that searches for those keywords on Twitter can see my tweet about the post that I wrote. Be sure to write creative headlines for your posts so people feel the urge to click on them.
There is no magic formula for content marketing success, despite what some would have you believe. For this reason, vary the length and format of your content to make it as appealing as possible to different kinds of readers. Intersperse shorter, news-based blog posts with long-form content as well as video, infographics and data-driven pieces for maximum impact.
Early versions of search algorithms relied on webmaster-provided information such as the keyword meta tag or index files in engines like ALIWEB. Meta tags provide a guide to each page's content. Using metadata to index pages was found to be less than reliable, however, because the webmaster's choice of keywords in the meta tag could potentially be an inaccurate representation of the site's actual content. Inaccurate, incomplete, and inconsistent data in meta tags could and did cause pages to rank for irrelevant searches.[dubious – discuss] Web content providers also manipulated some attributes within the HTML source of a page in an attempt to rank well in search engines. By 1997, search engine designers recognized that webmasters were making efforts to rank well in their search engine, and that some webmasters were even manipulating their rankings in search results by stuffing pages with excessive or irrelevant keywords. Early search engines, such as Altavista and Infoseek, adjusted their algorithms to prevent webmasters from manipulating rankings.