To avoid undesirable content in the search indexes, webmasters can instruct spiders not to crawl certain files or directories through the standard robots.txt file in the root directory of the domain. Additionally, a page can be explicitly excluded from a search engine's database by using a meta tag specific to robots. When a search engine visits a site, the robots.txt located in the root directory is the first file crawled. The robots.txt file is then parsed and will instruct the robot as to which pages are not to be crawled. As a search engine crawler may keep a cached copy of this file, it may on occasion crawl pages a webmaster does not wish crawled. Pages typically prevented from being crawled include login specific pages such as shopping carts and user-specific content such as search results from internal searches. In March 2007, Google warned webmasters that they should prevent indexing of internal search results because those pages are considered search spam.[46]
Your strategy defines your audience, your platform, your content, and even how you measure success. For example, if you sell a product for a young demographic, you may decide that Instagram is the best place to build your brand by using a series of witty pictures with a strong call to action to make a purchase. Alternatively, you may decide to extend the reach of your brand by attempting to break into a new market, such as building a rapport with women, who comprise a large proportion of Pinterest users. Micro-blogging may be an ideal way to give busy business people the bite-sized content they need on their morning commute, while infographics provide visual punch to make a point instantly.
Optimization techniques are highly tuned to the dominant search engines in the target market. The search engines' market shares vary from market to market, as does competition. In 2003, Danny Sullivan stated that Google represented about 75% of all searches.[63] In markets outside the United States, Google's share is often larger, and Google remains the dominant search engine worldwide as of 2007.[64] As of 2006, Google had an 85–90% market share in Germany.[65] While there were hundreds of SEO firms in the US at that time, there were only about five in Germany.[65] As of June 2008, the marketshare of Google in the UK was close to 90% according to Hitwise.[66] That market share is achieved in a number of countries.
Page and Brin founded Google in 1998.[22] Google attracted a loyal following among the growing number of Internet users, who liked its simple design.[23] Off-page factors (such as PageRank and hyperlink analysis) were considered as well as on-page factors (such as keyword frequency, meta tags, headings, links and site structure) to enable Google to avoid the kind of manipulation seen in search engines that only considered on-page factors for their rankings. Although PageRank was more difficult to game, webmasters had already developed link building tools and schemes to influence the Inktomi search engine, and these methods proved similarly applicable to gaming PageRank. Many sites focused on exchanging, buying, and selling links, often on a massive scale. Some of these schemes, or link farms, involved the creation of thousands of sites for the sole purpose of link spamming.[24]
Paid search advertising has not been without controversy and the issue of how search engines present advertising on their search result pages has been the target of a series of studies and reports[23][24][25] by Consumer Reports WebWatch. The Federal Trade Commission (FTC) also issued a letter[26] in 2002 about the importance of disclosure of paid advertising on search engines, in response to a complaint from Commercial Alert, a consumer advocacy group with ties to Ralph Nader.
Entertainment — The Internet is a plethora of things to do. Some are looking for videos. Others are looking for games. Many are entertained by new stories. Others like financial calculators. Others want to learn something new. Think about what kind of entertainment your target is looking for. Relate it back to your brand. That’s a great way to use SEM to connect.
Since there is an obvious barrier of entry for anyone trying to beat you once you’re established, you won’t have to worry about having competitors “buying” their way to the top. Their only option is pay per click ads, but then again, it isn’t the same as getting a higher position on the SERPs. Again, this is assuming that you took the right steps and were patient enough to solidify your place in the top search results. 

Anyone who types in a search query has a specific intent. And they’re expecting the content that they find in the SERPs to satisfy that intent. If you can understand the search intent of your prospective customers, it will transform your marketing in several ways. You’ll be able to predict what keywords your potential customers are likely to use.  It’s easy to start targeting keywords with no structure or strategy. But that’s a mistake.

Student teams that demonstrate strong Google Ads knowledge, develop a thorough online marketing strategy, execute optimized Google Ads campaigns and provide a post-campaign analysis with future recommendations for their nonprofit partner will receive a personalized certificate from Google recognizing their academic achievement and social impact. Top performing teams also have the opportunity to submit their story to be featured in Google’s Social Impact Spotlight Series, as well as Hangout on Air with Googlers near and far.
There is limited real estate for the top positions in organic search results. With the amount of content on the web today and the number of competitors you have, it can be hard to get in a top position, even despite your best efforts. If you’re a new business or an existing one trying to build your online presence, SEM/PPC advertising can get you in front of highly targeted customers.
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.
You can also make sure that you’re not bleeding revenue due to friction somewhere along that path. How does that work? When you focus on organic search traffic, you’re compelled to take the battle to multiple marketing fronts. While SEO outperforms all other channels regarding ROI, it doesn’t always work in isolation. Email marketing, content marketing, social media, and other channels can all serve your SEO strategy. I’ll tell you something about marketers who are truly worth their stuff.
Now, it’s important to emphasize that the term “organic marketing” doesn’t mean that no money is spent. You’re still going to invest in your marketing strategy and any related software ( Hubspot for inbound, MailChimp for email lists, Buffer for scheduling social media posts, and the like). Rather, organic means you’re not paying to boost the specific post itself.
Novelty wears off. Even if people aren’t getting sick of your ads, your product itself will become less revolutionary over time. When Casper launched, a direct-to-customer mattress-in-a-box company was a hot new take on the traditional sleep industry. Now there are so many competitors that the idea of a mattress showing up at your door in a box just isn’t as exciting.
Paid search advertising focuses on investing in the right types of ads to achieve prominent positions on search engine results pages and drive traffic to the site. Well optimized search ads can sometimes achieve higher positions than organic search results, while others might be displayed on the right side of the browser page. The success of paid search campaign rests on targeting the right keywords and selecting optimal advertising channels.
Search engine marketing (SEM) is a form of Internet marketing that involves the promotion of websites by increasing their visibility in search engine results pages (SERPs) primarily through paid advertising.[1] SEM may incorporate search engine optimization (SEO), which adjusts or rewrites website content and site architecture to achieve a higher ranking in search engine results pages to enhance pay per click (PPC) listings.[2]
Incidentally, according to a June 2013 study by Chitika, 9 out of 10 searchers don't go beyond Google's first page of organic search results, a claim often cited by the search engine optimization (SEO) industry to justify optimizing websites for organic search. Organic SEO describes the use of certain strategies or tools to elevate a website's content in the "free" search results.
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