"Blacklinks" might be a term that got mixed up. I'll assume they are asking about "backlinks."
Backlinks are like endorsements from other websites. When a site links to yours, search engines see it as a vote of confidence. The more quality backlinks you have, the more search engines trust your site, and this can help improve your rankings. It's like getting a thumbs-up from other websites, telling search engines that your content is valuable. But remember, it's crucial that these backlinks come from reputable and relevant sites.
Read More: What is the new ways of off Page SEO?
