YPN provided cost per click contextual advertising as well as various tools and services to assist publishers in building and improving their websites.
In May 2006, YPN caused some controversy by shutting down accounts used for MySpace layout sites.
Users of the service received an e-mail on March 31, 2010, that the service would stop serving ads on April 30, 2010.
[2] Users who wished to continue displaying advertisements were referred to the Chitika ad network.
Chitika is a search-targeted advertising network and serves over 2 billion ads per month.