It’s a simple Google Chrome extension. First, you have to install the extension in your Google Chrome browser. Once installed, it will appear as a little checkmark icon beside your address bar. When you click on it, it will immediately start scanning all the links on a particular web page. If a link is broken or dead, it will be highlighted in red, and the error will be shown right beside the text (e.g., “404”).
Smartphone - In this document, "mobile" or “mobile devices" refers to smartphones, such as devices running Android, iPhone, or Windows Phone. Mobile browsers are similar to desktop browsers in that they can render a broad set of the HTML5 specification, although their screen size is smaller and in almost all cases their default orientation is vertical.
Google PageRank (Google PR) is one of the methods Google uses to determine a page's relevance or importance. Important pages receive a higher PageRank and are more likely to appear at the top of the search results. Google PageRank (PR) is a measure from 0 - 10. Google Pagerank is based on backlinks. The more quality backlinks the higher Google Pagerank. Improving your Google page rank (building QUALITY backlinks ) is very important if you want to improve your search engine rankings.

In a series of books and articles published from 1964 through 1980, Nelson transposed Bush's concept of automated cross-referencing into the computer context, made it applicable to specific text strings rather than whole pages, generalized it from a local desk-sized machine to a theoretical proprietary worldwide computer network, and advocated the creation of such a network. Though Nelson's Xanadu Corporation was eventually funded by Autodesk in the 1980s, it never created this proprietary public-access network. Meanwhile, working independently, a team led by Douglas Engelbart (with Jeff Rulifson as chief programmer) was the first to implement the hyperlink concept for scrolling within a single document (1966), and soon after for connecting between paragraphs within separate documents (1968), with NLS. Ben Shneiderman working with graduate student Dan Ostroff designed and implemented the highlighted link in the HyperTIES system in 1983. HyperTIES was used to produce the world's first electronic journal, the July 1988 Communications of ACM, which was cited as the source for the link concept in Tim Berners-Lee's Spring 1989 manifesto for the Web. In 1988, Ben Shneiderman and Greg Kearsley used HyperTIES to publish "Hypertext Hands-On!", the world's first electronic book.[citation needed]
Entrepreneurs hoping for strong SEO (search engine optimization) rankings might take a lesson here. They can create a checklist of their own to make sure everything is perfect for their next website article. No, an SEO checklist won't protect you from crashing and burning. But it will help ensure that your post has the best chance it needs to rank high in Google. 
Take your competitors’ SEO work and apply it to yourself. For example, when writing your meta titles and descriptions, look at your competitors’ paid ads on Google for your keywords. Do they all mention a word or phrase (“complementary” or “free estimates,” for example)? Try using those to improve your titles and descriptions. After all, they spent money testing theirs out.
Being on the 3rd place and at the same time having such a low CTR, serves a search intent. Isn’t that right? By changing the meta description in to a PERFECT DESCRIPTIVE TEXT, I am going to trigger different actions from the users. Many people will start clicking at my result just out of curiosity, their search intent won’t be satisfied and rankbrain will start to slowly ruining my ranking as my post, that won’t be fulfilling their searches.
After you hit “Get ideas,” you will see the number of average monthly searches for the term you entered, plus other related search terms that you may want to use as keywords on your website. Create a list of the keywords and search terms you want to rank for, and fold them in to your website copy and content as naturally as possible. As Google sees your website using these keywords, it will view your site as a relevant and quality search result.
This topic seems actually quite controversial. Google answered the question by what could be taken as a denial. But their answer was kind of open to interpretations. And on the other hand, there are studies (one of them from Moz) that showed linking out has an impact. So, how can you be so assertive? Is it something that comes out from your own experiments?
Creation of new windows is probably the most common use of the "target" attribute. To prevent accidental reuse of a window, the special window names "_blank" and "_new" are usually available, and always cause a new window to be created. It is especially common to see this type of link when one large website links to an external page. The intention in that case is to ensure that the person browsing is aware that there is no endorsement of the site being linked to by the site that was linked from. However, the attribute is sometimes overused and can sometimes cause many windows to be created even while browsing a single site.
As an alternative to tackling this on your own, try using a service like Mayple to match you with your industry’s best marketing experts. Mayple is a platform that connects business owners to vetted marketing experts, so you can focus on running your business and delegate the rest to experienced professionals — all you need to do is fill out a brief explaining your business’ goals. It even monitors your project’s progress and ensures your expert always delivers the best results. Get started today.