Sugar Inc. is an online media company of blogs and websites that seeks to be “the definitive online media company for trendsetting, passionate women ages 18-44. Sites and communities include Shopstyle and the Sugar Network which includes PopSugar, SugarLoving, BuzzSugar, BellaSugar, FabSugar, CasaSugar, YumSugar, FitSugar, GeekSugar, GiggleSugar and DearSugar.

via Techcrunch

Nabbr is an online ad network and widget promotion network that specializes in reaching over 36 Million Gen-Y social net users.

IACAS Network (IAC Advertising Solutions) is an online ad network that offers marketers a variety of advertising opportunities across some of the world's top interactive brands, including 236.com, Ask Sponsored Listings, Citysearch, Evite, Excite, Fun Web Products, IWON, Match.com, RealEstate.com, Ticketmaster and Very Short List.

VIZI is an online ad network offers solutions across multiple media platforms. They represent over 20 exclusive major media properties and “boutique” specialty verticals.  Vizi.Direct has over 2,000 properties that serve advertising to their users, reaching almost 80% of the entire worldwide internet.

YuMe is the first dedicated broadband video ad network that offers a brand safe advertising experience that can be delivered to any device – PC, TV, mobile and more – whether streamed or downloaded.

MSN Live Search services include MSN Hotmail, MSN Messenger, MSN Search, Groups, Shopping, and Personal Finance.

Microsoft Digital Advertising Solutions provides solutions for marketers to connect with their target consumers across multiple digital touchpoints.

Google provides web search as well as specialized search.

Google News (including archives)
Google Patents
Google Product Search
Google Scholar (Scholarly papers)
Google Special Searches (including Public Service & Government)
Google Video Search

Yahoo! provides search services as well as a variety of marketing products.

Local Advertising 
Target prospective customers searching for businesses in your area on Yahoo! Local—and drive them to your web pages or physical location.

Search Submit
 Help expand your reach by ensuring that your business appears in our natural (non-sponsored) search results index.

Product Submit 
Reach millions of motivated potential buyers through the Yahoo! Shopping product search, Gift Finder and Buyer’s Guide pages

Travel Submit 
Help increase your bookings by promoting your offers and deals to eager travelers on Yahoo! Travel.

Email Marketing 
Boost web site traffic and build customer loyalty with Campaigner® easy-to-use email marketing tools.

Technology Solutions
Advertisers, technology providers and agencies: Build a better business with our API Programs.

Business.com is a business search engine and directory and pay-per-click ad network serving more than 40 million unique business users and thousands of advertisers every month.

Business.com helps business decision makers quickly find what they need to manage and grow their businesses, and enables advertisers to reach these users wherever they are across the business Internet through premier partners, including Forbes, BusinessWeek, Hoovers, Financial Times and Internet.com.

Kontera is an online ad network that provides in-text advertising and information services based on text and content analysis technology that maximizes relevancy and yield for online users, publishers, and advertisers.

The company’s flagship product, ContentLink™, finds contextually relevant keywords on a publisher’s web page in real-time and automatically matches them to relevant ads and information.