English idioms relating to communication-contacts-information.

Idiom	Meaning
Drop somebody a line	If you drop someone a line, you write a letter to them. "I always drop her a line to wish her a Merry Christmas."
Hear through the grapevine	If you hear of something through the grapevine, you learn about it informally, for example through friends, colleagues or acquaintances. "How did you hear that? Oh, through the grapevine as usual!"
Hit the airwaves	When someone hits the airwaves, they go on radio and/or TV to be interviewed or to promote something. "The hospital was embarrassed when the patient hit the airways with his side of the story."
Hot off the press	If a news article, for example, is hot off the press, it has just been published and contains the most recent information on the subject. "I just got it hot off the press; another bank has gone bankrupt!"
Keep someone posted	If a person asks you to keep them posted, they want you to keep them informed about a situation "Our agent promised to keep us posted on developments in the negotiations."
Megaphone diplomacy	If the media, through press releases, interviews and announcements, is instrumental in facilitating dialogue between two or more countries, this is referred to as megaphone diplomacy.
Put someone in the picture	If you give somebody all the information necessary to enable them to fully understand a situation, you put them in the picture. "Let me put you in the picture about what happened during your absence."
Speed networking	This refers to a relatively new urban trend which consists in making a potential business contact by briefly talking to a series of people at an organised event and exchanging contact details.
Spread like wildfire	If something such as news, rumours or gossip spreads like wildfire, it becomes widely known very fast. "As soon as the nomination was announced, the news spread like wildfire.
Take the floor	When someone takes the floor, they rise to make a speech or presentation. "When I take the floor, my speech will be short." he said.
Throw it over the wall	If someone throws something over the wall, they deal with part of a problem or project, then pass responsibility to another person or department without any communication or coordination. "You can't just manufacture a product and then throw it over the wall to the sales department."
Touch base	If you touch base with someone, you make contact or renew communication with them. "I'll try to touch base with you next week in London.
Word of mouth	Information passed on through conversation is transmitted by word of mouth "No announcement was necessary - the news had already spread by word of mouth."