High quality inbound links are links that will help you to get higher search engine rankings and targeted visitors. If you have 20 good inbound links then you'll get better rankings than with 100 bad inbound links. So what makes a high quality inbound link? There are several points that can make a link better than other links:

The link should use the keyword in the anchor text

If you want to get high rankings for a search term like "website promotion" then the links to your website should use exactly that text. The text that is used to link to your site (the "anchor text") influences the words for which your website will get high rankings. Make sure that the texts that are used to link to your website contain words for which you want to get high rankings on search engines.

The link should be from a relevant page

Links from related web pages usually work better than links from unrelated pages. Links from unrelated pages won't hurt your rankings but Google likes links from websites that are related to yours better. A related page is a web page that has loosely to do with the topic of your website. If you have reason to believe that the visitors of the web page might be interested in what you have to offer then the other page is a related web page.

The link should go to a relevant page on your site

While it's okay to get links to your home page it is better to get links to the page that is most relevant to the chosen anchor text. If the link text is "website promotion" then you should make sure that the link goes to a page that deals with the website promotion. If the link text matches the content of the linked pages then it's more likely that your web page is really relevant to that term and it's more likely that you'll get high rankings for that search term. If a surfer clicks on a "Website Promotion" link it's much more likely that he'll stay on your site if he gets the correct page.

It's good if the link is from an authority site

Links from pages with high authority will help to increase the Page Rank of your website. Links from websites with high Page Rank have a positive effect on the rankings of your own site. Unfortunately, the Google Page Rank that is displayed in the green bar in Google's toolbar is not the Page Rank that Google uses for its ranking algorithm. You'll often find websites with low Page Rank that rank higher than pages with high Page Rank in the search results. Don't trust the green pixels and use common sense. If a website is well known and if the site has good search engine rankings then it's likely that it is also an authority website.

The link must not have a no follow attribute

The nofollow attribute tells search engines that they should not follow a link. Links with that attribute don't help your search engine rankings. Unfortunately, you have to check the HTML code of your link partners to find out if they use a nofollow attribute to link to your site.

Links are necessary for the proper website promotion and for suitable search engine optimization.