From the press release:
In the first half of 2010, Wattpad has established cross-promotional partnerships with major self-publishing houses Smashwords, Lulu and Bubok.
To assist writers in connecting with readers on the site, Wattpad is launching the Self-Published Writers Program, a new marketing initiative that creates additional value for the time authors spend promoting their work online. Authors who have accounts with one of Wattpad’s Self-Publishing partners will be able to gain additional exposure through Wattpad channels based on their level of interaction.
Wattpad provides a platform for self-published authors to expand their online presence to a dedicated reading audience and is playing an increasing role in a writer’s marketing efforts.