The main topic of discussion revolves around issues accessing the website http://www.dot.tk, which is known for providing free domain names. Users report that the site has been frequently down, with one stating it has been unavailable 99% of the time over the past few years. There is a general sentiment that dot.tk has declined in reliability and usefulness compared to its earlier days. Participants also mention finding alternative free domain options, such as xnationx.com and mindris.com, indicating a shift away from dot.tk for domain registration needs.