Pay-per-play is a concept that is relatively recent and refers to audio ads that automatically play when people land on a Web page.  The ads play without necessitating any action from visitors and last few seconds.

Advantages of Pay-Per-Play Ads:

• You get paid for every visitor that comes to your site.
• You don't drive traffic away from your site like other types of advertisements such as PPC.

Disadvantages of Pay-Per-Play Ads:

• Some visitors may find this method of advertising intrusive since they have no control over it.

Overall, it's a good idea to exercise your judgment and decide based on the theme of your site whether or not to add a PPP code.

Pay-Per-Play Ad Providers:

• Pay-Per-Play Media
• NetAudioAds