M6D will use the funding to bolster its staff — currently at 60 employees in offices in New York City, San Francisco, Chicago, Boston, Atlanta and London —  and technology, including expanding social targeting into optimization services for both marketers and publishers. CEO Tom Phillips, who filled us in on the latest at M6D last week, said the annual revenue run-rate in the fourth quarter was topping 30 million — not bad for the company’s second full year of operation.

Menlo Managing Director Mark Siegel will take a seat on the M6D board of directors. In addition to being named one of AlwaysOn’s top 100 venture capital firms, last week Menlo also participated in a $15 million Series C round of funding for Flurry, a mobile app analytics, promotion and monetization firm.

In addition to expanding sales and marketing initiatives, the funds will be used to expand the reach of Flurry Anayltics and the App Circle app promoter and monetizer. Flurry will also dedicate some of the investment to new mobile app services.

Flurry Analytics — used by more than 35,000 companies in 60,000 apps on the iOS, Android, BlackBerry and J2ME platforms — powers AppCircle, an intelligent recommendation engine that suggest other apps to users of apps in Flurry’s network.

In November, Flurry recorded 5 billion anonymous end-user sessions from over 100 million unique devices for more than 35 billion data transactions. According to the company, more 30 million app users have viewed an AppCircle recommendation, resulting in several million app downloads.

Weening down a list of 300 firms by analyzing portfolio performance and exit deals during the last three years, AlwaysON has concocted its second annual VC100, the top 100 venture capital firms (though the bent is toward the U.S.). Startup ad tech firms are likely memorizing the list at this very moment.

There are some mighty familiar names on there, such as the seemingly ubiquitous Union Square Ventures, heralded for its investments in Foursquare, Tumblr and Zynga, but also an investor in ad manager Clickable and mobile app analytic firm Flurry. Don’t forget the VC godfathers at Sequoia Capital, which — in addition to past investments in Google, Yahoo, Apple and other big names —  led a funding round for Israeli firm KENSHOO this past summer.

Familiar to the interactive ad space will be Menlo Ventures, which has poured cold cash into DataXu, Invidi, YuMe and eXelate; Institutional Venture Partners, which dropped a fat load into ad verifier Double Verify’s wallet in March; Focus Ventures, which has invested in RTB platform Turn along with list member Trident Capital; and social media wizkids Buddy Media and attitudinal targeters Resonate investors Greycroft Partners.

Those who made the VC100 will be awarded gold chalices a la Lil’ Jon (HUH-WHA?) at the Venture Summit Silicon Valley 2010 in Half Moon Bay, Calif., from Dec. 13 to 15.

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