据游戏邦了解，占美国陈列式广告近1/4市场份额的社交网站Facebook，其网络广告盈收却仅占美国网络广告年收入的5%。

最近，AdAge一篇报告指出，eMarketer的最新估测显示Facebook社交网站2010年的广告盈收约为18亿6000万美元。其中，12亿1000万美元来源于美国本土广告市场。而据游戏邦了解，美国2010年的网络广告投入总计高达258亿美元。由此看来Facebook社交网站的广告盈收仅占美国网络广告市场投入的4.7%。

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众所周知，Facebook拥有坚强的经济实力，它本可以做得更好。但就以上数据看来，Facebook并没有很好地实现广告的货币化，在这方面仍有很大的进步空间。对此，eMarketer也做出了一个预测，认为Facebook的美国广告市场盈收将在2012年底翻倍增至28亿9000万美元，这一金额将占美国网络广告市场份额的9%。

与此同时，Facebook的全球广告盈收预计在2012年达57亿4000万美元。而与之相比，eMarketer同时预计社交网站MySpace的全球广告盈收将从2009年的4亿7000万美元，下降至2012年的1亿5600万美元。

下图反映了Facebook美国广告营收与美国网络广告的投入比例：（本文为游戏邦/gamerboom.com编译，转载请注明来源：游戏邦）

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Facebook may be responsible for nearly a quarter of all display ads shown in the U.S., but it only collects about 5 percent of U.S. online ad revenues. An article in AdAge reports on new estimates from eMarketer which peg Facebook’s 2010 advertising revenues at $1.86 billion, with $1.21 billion of that coming from the U.S. That would give Facebook a 4.7 percent share of the estimated $25.8 billion total spent in the U.S. on online advertising last year.

Despite its already impressive financial might, Facebook could be doing a lot better. The gap between its share of display ad impressions and ad dollars shows how poorly Facebook is monetizing those ads, and suggests there is still a lot of room for improvement. Indeed, by 2012, eMarketer estimates Facebook’s U.S. ad revenues will more than double to $2.89 billion and it will account for nearly 9 percent of the U.S. online advertising pie.

Meanwhile, Facebook’s worldwide advertising revenues are expected to reach $5.74 billion by 2012. As a (sad) point of comparison, eMarketer estimates that MySpace’s worldwide ad revenues will decline from a high of $470 million in 2009 to $156 million in 2012.

Below is a table from AdAge showing the estimates for Facebook’s U.S. advertising revenues compared to total U.S. online ad spending.（Source：TechCrunch）