I'd be interested to hear more about what sort of challenges you have faced, and if/how you responded to them, if you have the time. Regardless of the upthread

I'd be interested to hear more about what sort of challenges you have faced, and if/how you responded to them, if you have the time. Regardless of the upthread "well, just switch [your company/government/entire friend network] to an open/permissive service" non-answer, I think there's going to be ever-more need for unofficial clients for some of these services, and a big part of that is going to be how to avoid having them shut down immediately by service providers...