Well, i have tried almost every free domain option and a had seen sadly how every one goes down on google and even stop existing or become useless. Dot.tk was one of them, i really love that service that worked for me for years where i could register unlimited .tk domains, the website was kinda simple and forgotten but it worked like a charm. Now, since Freenom has taken control of dot.tk, it all became garbage. The domain i had registered for years and used as a personal blog page got taken down without any warning and when i asked to support what happened all they could tell me is that they offer cheap domains, like if it was just an autoresponder. I tried registering a new domain again, got it and it lasted a week, after that they took it down again without warning. i had a joomla proyect there so i didn't infringed anything. Don't use freenom, they turned the great dot.tk who offered uninterested .tk domains into a money hungry company.