Today, I've heard a station(which will remain anon) where the presenter interviewed a guest on the phone by putting the mic to the speakerphone. You could hear all of the other studio occupants rustling around and shifting in their seats, during this 15-minute chat. Then a baby, obviously in the studio, started crying and drowned out the phone guest! Tip- buy a phone interface! Or empty out the studio before you chat on a speakerphone!