Thanks a lot, Scott.
I am aware of several of these things. A friend of mine, https://stefanbohacek.online/@stefan, created https://jointhefediverse.net to remedy this lack of undesirable for newbies and no-nerds.
I know what #whitelisting is general, but how would I go about this on #Mastodon?
The whitelist, if I don't want to do everything manually (no-go,) would need to be "intelligent" and able to discern the platform s.o. is using for his handle...
I can live with the screenshot issue.