Had 2 interviews, one with the recruiter and one with the hiring manager, and both went very well. About a week later, the recruiter called me to say that they were extending an offer, and that she would be preparing an offer letter for me, which she would send the next business day. I never heard from her again, and my emails were ignored. I understand if they changed their minds, but I would have at least liked to have been notified, even if it were via email.