You can book slots online and there are thousands of collection points across the UK.
Yvonne Scullion of Zenith, an agency which books advertising slots for firms such as BT, Burger King and Rover Cars, says the Radio Advertising Bureau, an industry body, has done well in extolling the virtues of radio advertising and has made it much easier to book slots on a number of stations without having to contact each one directly.
The financials for 2012 and 2013 seem to show that no matter what the content is on-screen, advertisers have continued to book slots around the show, even when Daybreak, was going through its much-derided "purple phase" - it launched with purple branding before switching in 2012 to the more traditional yellow associated with numerous breakfast programmes.
Several hardback books slot neatly into a transparent red Perspex thing that has the name ZAHA HADID picked out in giant capitals raised about a millimetre high.
Then you turn up, meet other people who have booked slots at the workshop and set to work.
Advertisers booked slots in advance, and could not make on-the-fly decisions about what ads to show based on what people were doing on the Web.
What's more, the Minecraft instruction manuals occupied four of the top five bestselling children's books slots for part of the summer.
Both the RSPB, which has opposed the impact of airport plans on coastal wetland, and the regeneration body Drink (Demand Regeneration in North Kent) said they had booked slots to talk to the visitors during the private visit.
To view this fascinating site (work continues), book your slot on a Saturday morning by calling 055 3215446 (15,5055lire/€8).
Some help is free while the rest comes at a cost, and users can choose whether to connect instantly or to book a slot for later.
