Audience Accumulation refers to the total number of people exposed to the advertising messaging of an advertising campaign, 1 or more times, across all media.

In media, the term 'audience' refers to the gross or net number of people or households exposed to a particular medium or advertising message.

Switchpod is a podcasting hosting service that provides both free and premium accounts to users. Users can create a podcast, upload it to Switchpod and be podcasting to the world in minutes.

BootB is a global “pitching engine” that brings together marketers and creatives from all over the world.

Weather.com offers advertising solutions from cable advertising, cable affiliate sales and mobile advertising, to online advertising and radio advertising.

BlogTalkRadio is a social radio network that enables users to create free, live, call-in talk shows with unlimited participants utilizing an ordinary telephone and computer. Shows are automatically archived and made available as podcasts and no software download is required. Listernes can subscribe to shows via RSS into iTunes and other feed readers.

Libsyn enables users to record podcasts and publish podcasts.

Blast Podcast is an advertising network focused on podcasts. 

Wizzard Media Advertising is an ad network specializaing in podcasts.

Companies who offer advertising programs across a wide range of media, from websites, mobile, blogs & iptv, to newspaper, magazines, cable, television and radio.