We'd learn to censor what we think the way we censor what we say. No one would talk anymore, just communicate telepathically
We'd find out some pretty shocking things about everyone. People are not the way one imagines.
No more lies, less weirdo/psychopath in disguise, I guess people potentially will lose their individuality and become more like a hive.... ok the few one that can fit together... not sure but I think it could be "interesting".