2) "Ghosting" a very popular “trend” these days and some cases are:
a) After you agreed to a phone screen and then the call never arrives, you think maybe the recruiter took more time in a previous commitment so you reach out and no response ever comes; well my dear candidate you have been ghosted.
b) Yay! You got the interview and you were told you should hear back within two weeks to know the outcome of the interview. And you never hear back from them.
c) Candidate sends thank you note or follows up, no response. And any response will never come.
3) A personal note or call with a brief feedback: not very common these days, but in my personal opinion this is the best way to provide feedback notifying the outcome of the meeting and why the candidate was not selected.
For example, perceived lack of communication skills; the candidate was so nervous and could not concentrate but after receiving this feedback, now understands what needs to be done in order to be successful in a future interview.
There is always room for improvement, so believe me that any recommendations or tips on what to work on to improve interviewing skills are always welcome!