This week, there are a couple of executive hirings in Silion Valley related to the search and social networking industries. First up, Penny Baldwin has been tapped as senior vice president, global integrated marketing and brand management for Yahoo! Is there any room left on her business card? That's quite a long title!

Previously, Baldwin served as Managing Partner of Young & Rubicam Brands, Y&R Advertising and Wunderman Direct Marketing.

"One of Yahoo!'s greatest assets is its brand," said Yahoo!'s chief marketing officer, Elisa Steele. "Our integrated, global approach is critical to our success and we have a deep business commitment to fulfill our promise to our users, customers and partners. Penny is uniquely qualified to lead the effort and her leadership, experiences, knowledge and skills are excellent additions to the Yahoo! marketing team."

Meanwhile, Facebook has selected David Ebersman as the social network's new chief financial officer. Ebersman was formerly the vice president and chief financial officer at Genentech.

"We received a lot of interest in