One huge difference is that information to a large degree would stay within these communities. Gossip was inherently limited by the bandwidth of the jungle telegraph.
What's scary now, however, is anyone can publish any information about you, tag it to your face, and now everyone walking past you could theoretically face-search you to see any gossip about you.
Before you could travel someplace else, should you do something that required it. Now you can't go anywhere.
In earlier times you could travel somewhere else and try the same thing again, one side-effect of which was the proliferation of serial scammers.
For a good person, in a sense that covers most people, having your past reputation follow you around is a benefit, the ability to wipe out reputation only benefits those with negative reputation. Furthermore, if there's a general assumption that it will follow you around, it acts as a deterrent to avoid doing immoral things, since you won't be able to easily walk away from that.
The obvious limitation to "anyone can publish any information about you, tag it to your face" is the well-established concept of libel. Publishing false harmful information is already forbidden, but they should be able to "warn the world" if the information is truthful.
