Multiple times this year, I've had a recruiter schedule a "follow up call" after my final round of interviews. I always offer same- or next-day availability, but recruiters tend to schedule the call at least a couple of days out.
Invariably, these calls have been less than 1 minute and boil down to sorry, you're not hired.
Um... why not just say that by email? Or (for those who insist email is too cold) call me ASAP after the hiring decision, and leave a voicemail if I don't answer?
Why make me wait several days for a <1 min phone call?