A quote from the official Zynga homepage:

Three of our top games are participating in a special relief campaign to help earthquake survivors in Haiti. Zynga is donating 100 percent of the proceeds from non-withering white corn within FarmVille, a Haitian drum on Mafia Wars, and a special chip package in Zynga Poker to support emergency aid in Haiti through the Zynga Haiti Relief Fund. Users can also support the fund by donating directly through Zynga.org, on this page.

All contributions will benefit the World Food Programme (WFP), which has set up an emergency response team to distribute food and other relief to thousands in Haiti affected by the devastating earthquake.

Zynga and our players already have a strong connection to the people in Haiti. Together, we have raised more than $1.2 million for Haiti through purchases of virtual social goods. Zynga’s Haiti campaign provides school lunches to Haitian children and contributes to a revolving loan campaign for Haitian women living in extreme poverty that enables them to support their families.

Keep an eye out for this tonight! (maybe!)