Link Popularity is the number of hyperlinks pointed to your website. It's also many times used as term for Google's Page Rank, Google's own method of search engine link popularity. The search engines have decided that if many sites are linking to your site, that site must be a better than the others and deserves a boost in their rankings. If you think about it, this makes a lot of sense. People are linking to good websites, not to bad ones.
Now these days, inbounds links are the one of most important factor for getting a high keyword ranking, the most search engines are ranking their search result on the link popularity from your site. Not the quantity from the links, but the quality of those links is important. It's also important that the inbound links are in the same tropic. Remember one good link can be more important than hundred bad links. Not only the search engines page ranking is important, good links creates also extra traffic to your website.
First of all stay away from link farms, free for all links and similar schemes. They don't help you with your Page Rank. You have a bigger change that your site get banned from the search engines than that you receive a Page Rank boost. Get listed in the internet directories (Yahoo, DMoz).
Ask other website owners to link to you. A great way to find other website owners who are maybe willing to link to you is to do a link popularity check on one of your competitors. These sites are most of the time in the same tropic as you.
Enter a domain name below to find out popularity report it may take up to 30 seconds to gather the necessary information depending on the current volume of traffic to the various search engines.