hello, I'm a new wordpress user. I was wondering what is the purpose of links and why do we have to link? thanks
Back links to your website from other websites are votes of popularity that Google and other search engines use to determine how valuable your website is, mostly in your niche. The more votes you have from other strong websites, the higher you will rank in the search engine results pages for the searched keyword term. Other than buying or posting advertising all over the internet, being found in organic search is the main way to be seen.
You don't have to link but linking to related properties are general human nature who use blog. If you talking about backlink then it's very important to get found on search engine on related keyword search.
Links are a very important part when trying to rank in search engines and get traffic. Make sure to have a mixture of links. Not just one kind.
No doubt Backlinks (inbound links) nowadays are necessary part of the SEO because when you build valuable backlinks, your site gets a higher ability of being indexed by the search spiders and search engine rankings algorithm. Sure it will also help to boost unique traffic to your website.
Backlinks increase your site's page ranking. When you have created lots of backlinks with relevant keywords, the search engine will include your site if it matches the user's search queries. Thus, backlinks can drive traffic to your site. With backlinks, you can close sales too.