Backlinks are links that come from other websites and that link to your website.

There a good and bad backlinks and SEO Backlink Service (https://Seobests.com/buy/2000-social-networks-profiles-backlinks) having backlinks is very important when trying to make your website well-positionned on search engines (Google, bing, ...).

I would definitely suggest you to take a look at that page (Wikipedia): website

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