I want to create a WordPress plugin where users can easily install and join a network of linked blogs. I've seen plugins like this before but most of the links are spam. There must be a mechanism to prevent or reduce spam (e.g. track IP so that people can't use bots to get views). Also, there should be something to prevent people from modifying the PHP code.
Please provide a working plugin and a PHP file that acts as a server. The server should read from and write to a text file (I will convert to SQL). The files should be commented.
I have made many WordPress plugins before, so I have a complete understanding of how WordPress and WordPress plugins work. I can complete everything within 1 day.