@feditips @Zeugs @mho @jwildeboer @tchambers
These are implementation details which are orthogonal to the architecture.
Personally, I'm of the opinion that we shouldn't pretend that information in a social network can be private or shielded, and we should educate people that *everything* posted in the internet should be treated as public information.
I know that this is not a popular opinion though, so a search engine could be made opt-in.