> With GPL, anything which isn't client side code should be fine, especially since legal advice from GPL authors have said that SaaS and GPL do not put any additional requirement on the service provider.
Legal guidance from GPL authors is of somewhat limited utility; they aren't your lawyers, and for software where the FSF isn't the copyright holder as well as the license author, it doesn't even have the utility of being a documented representation from the copyright holder as to their intent with license they were offering.
They also are employed by an entity with a vested interested in promoting the use of the GPL.
Legal guidance from GPL authors is of somewhat limited utility; they aren't your lawyers, and for software where the FSF isn't the copyright holder as well as the license author, it doesn't even have the utility of being a documented representation from the copyright holder as to their intent with license they were offering.
They also are employed by an entity with a vested interested in promoting the use of the GPL.