Proxy servers are a computer system or an application that intermediates between the client and the server. It accepts the requests from the client and directs it to the required server that can cater the information or webpage requested.

Paid links on web pages has always been the bone of contention between website owners and search engine optimizers. More links to your page or site was looked upon as a mark of reputation and believability.

This refers to how we are managing to interlink various pages within our own web-site. Wikipedia is a good live example of how Cross Linking or Internal Link Architecture can be effectively and efficiently utilized.