Media Power 50
New ad, optimization programs reflect Facebook's push to attract marketers
FacebookPhone: (650) 543-4800URL: www.facebook.comTraffic: 1.11 billion monthly active usersAd revenue: $1.25 billionAd rate: Varies based on number of shares
LinkedIn gives b-to-b advertisers precision targeting, engagement
LinkedIn Phone: (650) 687-3555URL: www.linkedin.comTraffic: 155 million UMV worldwide*Ad revenue: $258 millionAd rate: N/A
Twitter makes bold moves to attract advertiser attention
TwitterPhone: (415) 222-9670URL: www.twitter.comTraffic: 91.5 million monthly*Ad revenue: $582.8 million**Ad rate: Rates based on ad budget and bid level, with advertisers charged per engagement (follow, retweet, reply, etc.)
*Quantcast **eMarketer Inc.