Link wheel is a technique in which we interconnect web 2.0 websites and then link back all those websites to main website. But you should know after Penguin update this method is known as Black-hat seo method.
Link wheel is used in internet marketing strategy. The basic idea of link wheels is to create a net of links which flow from one website to another website and so on and finally to a targeted website. link wheels is effective when social media sites are used. You can do it by maximizing your reach for getting more links through affiliate websites and through various link building platforms.
Linkwheel is very important for seo because it helps to get fast and easy traffic of content in the search engine. It connect links each other throw inlinking of links and make a chain of its. It provide best backlinks which are necessary for high page rank of search engine.