Internal links are links that go from one page on a domain to a different page on the same domain. They are commonly used in main navigation.
These type of links are useful for three reasons:
They allow users to navigate a website.
They help establish information hierarchy for the given website.
They help spread link juice (ranking power) around websites.
Internal Linking is the linking to particular webpage to its own sub-domain..Internal Linking is more important for a website..Even Google will consider internal link as the quality backlink..
Your internal links can help make sure that all of your pages are seen by search engine spiders, build on the keyword density within the site, increase the PageRank of your internal pages and ultimately increase your site’s overall ranking.
An internal link allows you to link to another section of the same website, so basically moves the page up or down to the desired position. This is useful for the user to quickly access the information he / she is seeking.
An internal link is a hyperlink that is a reference or navigation element in a document to another section of the same document or other documents that may be on or part of the same website or domain. In articles like this, the words highlighted in blue are examples of internal links.
Internal linking is best way to increase page views because the person who visit on your blog for searching some information is always like to read more.
Other benefit is also helpful to indexing page on different search engine quickly.
According to penguin update, internal linking works good, you should use this technique to get higher ranking in Google, there is no doubt of this really.
Bookmarks