Incoming links are the links to a particular page coming from other websites. These links refer how many external website links you have in your web-page. Incoming links are more important than internal links because these links tell search engines that how many websites recognize you. This increases your authenticity resulting link popularity.
The following are a few ways by which you can increase your incoming links.
1. first of all find relevant sites, which are related to your website. For example
if you have a shoe store, then you can exchange links with other shopping sites who deal in fashion wear. This can increase your traffic and lure more visitors.
2. You can simply search link partners in online web directories. All major search engines provide web directories where you can find categorized website listing. After deciding your pertinent sites you can exchange links with them.
3. Search for sites which accept site submissions. You can visit those sites and directly add your link and request them to exchange link with you.