After passing on an intial offer to be bought out by EA (who eventually went with Playfish as their social gaming acquisition), Redwood City, California based RockYou has recently secured an additional $50 million in series D funding. This recent influx of cash was lead by SoftBank. The news funds are expected to further enhance RockYou’s current offerings and expand development, boost global brand, as well as create products that are ripe for in-game advertising possibilities.

Currently the largest independent ad network in the social media field, with more than 213 million monthly unique visitors, the company logs over 15 billion monthly impressions. Since it’s inception in November 2005, RockYou (originally called RockMySpace) specializes in providing marketers unique and industry leading solutions to reach specific market segments. Primarily focused on widgets and social applications, RockYou has commented that with this new round of funding they will also begin venturing into the currently rather risky waters of in-game offers, i.e. the Scamville affair.

“RockYou has been an innovator in the social media industry since our launch more than four years ago, and we are excited to expand our relationship with SoftBank with this round of funding,” said Lance Tokuda, co-founder and CEO, RockYou. “In 2009, RockYou is on target to triple our revenue from the previous fiscal year, demonstrating our continued growth in the space.”

With rumored revenues in the $30 – $40 million per year range, if Tokuda’s statement is on track, RockYou is well within the revenues range of major players including Zynga and PlayEAfish.

This latest round of funding brings RockYou’s combined total raised to a healthy $118 million. This round D funding effectively doubles what previous round C had netted – $52 million from SoftBank and SK Telecom Ventures this time last year. In addition to SoftBank and SK Telecom Ventures, Rockyou’s finding arrives via Sequoia Capital, Partech International, Lightspeed Venture Partners, and DCM.