You can confer some of your site's reputation to another site when your site links to it. Sometimes users can take advantage of this by adding links to their own site in your comment sections or message boards. Or sometimes you might mention a site in a negative way and don't want to confer any of your reputation upon it. For example, imagine that you're writing a blog post on the topic of comment spamming and you want to call out a site that recently comment spammed your blog. You want to warn others of the site, so you include the link to it in your content; however, you certainly don't want to give the site some of your reputation from your link. This would be a good time to use nofollow.


Brian hello! First off I want to THANK YOU for this fantastic post. I can’t emphasize that enough. I have this bookmarked and keep going through it to help boost our blog. I totally nerded out on this, especially the LSI keywords which made my day. I know, pathetic, right? But when so much changes in SEO all the time, these kinds of posts are so helpful. So thanks for this. So no question – just praise, hope that’s ok 😁

Before you say it – no, true guest blogging isn’t dead, despite what you may have heard. Securing a guest post on a reputable site can increase blog traffic to your website and help build your brand into the bargain. Be warned, though – standards for guest blogging have changed radically during the past eighteen months, and spammy tactics could result in stiff penalties. Proceed with caution.
You can confer some of your site's reputation to another site when your site links to it. Sometimes users can take advantage of this by adding links to their own site in your comment sections or message boards. Or sometimes you might mention a site in a negative way and don't want to confer any of your reputation upon it. For example, imagine that you're writing a blog post on the topic of comment spamming and you want to call out a site that recently comment spammed your blog. You want to warn others of the site, so you include the link to it in your content; however, you certainly don't want to give the site some of your reputation from your link. This would be a good time to use nofollow.

Hey Brian, love your site + content. Really awesome stuff! I have a question about dead link building on Wikipedia. I actually got a “user talk” message from someone moderating a Wikipedia page I replaced a dead link on. They claimed that “Wikipedia uses nofollow tags” so “additions of links to Wikipedia will not alter search engine rankings.” Any thoughts here?
Search engines use complex mathematical algorithms to interpret which websites a user seeks. In this diagram, if each bubble represents a website, programs sometimes called spiders examine which sites link to which other sites, with arrows representing these links. Websites getting more inbound links, or stronger links, are presumed to be more important and what the user is searching for. In this example, since website B is the recipient of numerous inbound links, it ranks more highly in a web search. And the links "carry through", such that website C, even though it only has one inbound link, has an inbound link from a highly popular site (B) while site E does not. Note: Percentages are rounded.
Fortunately, Google puts more weight on the anchor text of external links anyway. So as long as some of your external links have your target anchors, you’re probably OK with a “Home” button. In fact, I’ve ranked homepages with a “Home” anchor text nav button for some seriously competitive terms. So it’s not a make-or-break ranking signal by any means.
Write articles rich in content. Quality articles will get ranked better in search results. Make sure that your articles address the needs of your readers, and that they can find all of the information they need in one spot. This is the most effective means for increasing traffic to a website; offering people something that they cannot obtain elsewhere, or at least, not to the level of quality that you are offering it.[1]
Black hat SEO attempts to improve rankings in ways that are disapproved of by the search engines, or involve deception. One black hat technique uses hidden text, either as text colored similar to the background, in an invisible div, or positioned off screen. Another method gives a different page depending on whether the page is being requested by a human visitor or a search engine, a technique known as cloaking. Another category sometimes used is grey hat SEO. This is in between black hat and white hat approaches, where the methods employed avoid the site being penalized but do not act in producing the best content for users. Grey hat SEO is entirely focused on improving search engine rankings.
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