I think those are ads. Simply just ignore it or if something you like click on it and it will take you to the website like if you see a towerhobbies ad and you click on it, it will send you to it. Some ads trick you to get you infected. But I never had issue with rc forums taking me to a infected site. But if you click on it you will find more information about that ad and from there it should translate it automatically or you can manually do it. And you welcome.
