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These attributes tell Google that they should not count these links when determining how to rank your site (though they do use them as “ hints (opens in new tab)”). For example, if a site links to you as part of a paid advertisement, Google requires them to give this link either a ‘ nofollow (opens in new tab)’ or a ‘ sponsored (opens in new tab)’ attribute. Not all backlinks will help you rank higher in search engine rankings, though. That’s why one of the main tasks of search engine optimization (SEO) is to build a high quality backlink profile (opens in new tab). If lots of reputable websites link to you, then search engines are likely to rank your website higher in their search results. That link is called a backlink to your website.īacklinks are a valuable commodity because they signal to search engines that your site has useful content.
In one of my blog posts, I might cite a piece of information I found on your website and so include a link back to it. So what is a backlink? Suppose you have a website and I have a blog. But there is another lucrative, but illicit, option: selling backlinks. The most obvious ones are advertising and affiliate links. Why do content thieves steal content and try to pass it off as their own? Because unfortunately there are plenty of ways for them to make a profit doing so. Inevitably, this results in poor-quality copy, and yet these fakes sometimes rank higher in search listings than the original article. In some instances, scraper sites even run stolen content through a synonym builder, which swaps in words at random in an effort to evade checks and balances. This hurts the websites that you love and can also lead to legal troubles and hefty financial penalties for the content stealers. Then they create their own website and post the stolen content as their own, getting credit for other peoples’ hard work.
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Web scraping is even valuable to scientific researchers who often need to obtain and analyze data, such as coroner's reports or clinical trial data (opens in new tab), as scraping can make getting the information much faster.Ĭontent stealing sites also use scrapers, but for the malicious purpose of copying original articles from legitimate websites or from their RSS feeds (opens in new tab). It can also be used to identify sites that are violating copyright (opens in new tab) by hosting stolen content or selling counterfeit goods so that appropriate action can be taken. For example, it allows companies to get data about their competitor’s prices (opens in new tab), which they can then use to adjust their own. The information you get from web scraping can be incredibly valuable. But you don’t need to be a skilled programmer to get up and running with web scraping - a quick Google search reveals plenty of pre-built scrapers that can be used without any programming (opens in new tab) knowledge. If you know how to code, you can build your own scrapers from scratch. The scraper then finds the information of interest in the HTML file and extracts it, storing it in, for example, a spreadsheet. The crawler finds the URLs you want to scrape and downloads their HTML files. So how does a web scraper work? It's usually made up of two parts, a crawler and the scraper itself, that work together (opens in new tab). That’s because computers can do things much quicker than us humans.
Usually, though, web scraping is done by computer programs. As you’ve extracted information from the site the article was posted on, you’ve scraped it. For example, if you read an article you like, you might decide to copy and paste some text from it as a quote and link to it in a social media post. The simplest form is done manually - you’ve probably even done it yourself. Plagiarizing sites steal content from legitimate websites via web scraping, which is the technical term for extracting information from a website. So how and why does it happen? Scraper shenanigans This kind of content stealing is both illegal and unethical.
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For example, a recent TechRadar Pro article entitled "It's time CEOs gave SEO (opens in new tab) the attention it deserves - here's why" had 77 results when a quote was copied and pasted into Google.
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