teller (n.)

• adviser
• announcer
• annunciator
• authority
• banker
• cashier
• channel
• communicant
• communicator
• discounter
• gossipmonger
• grapevine
• informant
• informer
• interviewee
• moneylender
• monitor
• mouthpiece
• newsmonger
• press
• publisher
• radio
• reporter
• source
• spokesman
• television
• tipster
• tout
• witness