In reply to Jesse.

The GPL does not prohibit selling software. It does not set the price that you sell it for. (It does however limit what someone can charge you if they have distributed a binary version of the software to you, and you request the source code from them.) Please see https://www.gnu.org/philosophy/selling.en.html (on the GNU site, who are the ones who wrote the license.)

As far as the offering various web hosting related services, can you clarify what situations would be in violation? Are you thinking of the AGPL version of the GPL license? (Even then it still wouldn't be a violation to host it, even with changes, as long as you make the changed code available on request.)

Please make sure you know the specifics of the GPL licenses before you make claims about them -- much uncertainty and halfway false information about the GPL licenses has been perpetuated through the years by people who thought they knew what it requires, and it has scared some people away when their use would be fully in compliance.