I used Juno for a number of years and, at least in the past, they do care. At least their free services are ad based. When I left them you had to connect through their Win based software. They now have a Mac version of software. In the past, if you were Linux based, you were out. Which is why I am out. If you can run through Wine, I do not know. Maybe their fee based ISP will allow a Linux system to connect without their software.