Google (Nasdaq: GOOG) has yet to realize significant revenue benefits from its acquisitions of dMarc Broadcasting (Audio Ads) or YouTube, according to the 10-Q filed with SEC Thursday. That comes from the risk section, as examples of how “the anticipated benefit of many of our acquisitions may not materialize.” But Google needs to get benefits from those and other acquisitions to help provide the kind of growth analysts expect.

—Google completed 10 acquisitions in 1H07. One, the 10-Q says, was an asset purchase, a “development stage enterprise.” The total initial purchase price for the remaining nine was $183.6 million cash plus possible cash earnouts totaling up to $41.8 million if certain performance targets are met through 2010.

—Google still has a potential payout for dMarc—additional cash payments of up to $1.1 billion if certain performance targets are met through December 31, 2008: “Since these contingent payments are based on the achievement of performance targets, actual payments may be substantially lower.”