Ginny Marvin writes about paid online marketing topics including paid search, paid social, display and retargeting. Beyond Search Engine Land, Ginny provides search marketing and demand generation advice for ecommerce companies. She can be found on Twitter as @ginnymarvin.

• Marketo Scores In IPO, Shares Close Up 77%
• Yahoo & Twitter Bring Real-Time Tweets To Yahoo’s Newsfeed
• Facebook Retargeting Partner Triggit Lands $6 Million In New Funding
• User-Generated Video Ad Units Come To Facebook Newsfeeds Through New Partnership
• New Google+ Hangouts App Enables Cross-Platform, Multi-Media Conversations
• Study: Organic Posting Is Most Popular Social Media Tactic, But Not The Most Successful
• Twitter Acquires Contextual Analytics And Data Visualization Startup Lucky Sort
• The Hilarious In-Person Tour Of A Facebook Update [Video]
• Online Sales Tax: Why E-Commerce Companies Are On Both Sides Of The Debate
• YouTube Launches (Ad-Free) Paid Subscription Channels
• Google Analytics Gets New Profile Filter Fields With Special Focus On Mobile and Social
• Study: WordPress Grabs More Share Of Top 100 Blogs
• Sharethrough Mobile Platform Launches To Power Native Advertising On Mobile Devices
• Facebook Video Ads Could Appear In Newsfeeds As Soon As July
• YouTube Paid Subscription Channels Set To Launch Soon
• Google AdSense Removes Invalid Activity From Reporting
• Global Ad Spend Estimates Lowered On Weak European Economy, Latin America To See Highest Rate Of Growth
• AOL’s New Initiatives To Put Digital Video On Par With TV
• “Get More Likes”: Facebook Promoted Page Ads Now Available Globally
• New: Real-Time Conversions Now Live In Google Analytics
• Twitter Rolls-Out Self-Service Ad Platform To All U.S. Users
• Foursquare Set To Sell Check-In Data For Ad Retargeting
• New Google Display Planner & Demographics Reports Launch In AdWords
• Google: Viewable Impressions Will Be The Standard On GDN And DoubleClick
• Yahoo Gains Ground in Video Metrics; Online Video Ads Up 12% in March [comScore]
• Social Video Platform Spreecast Launches Mobile App, Plans Revenue Growth
• Study: Facebook Activity Correlates To TV Viewership (Social TV’s Not Just For Twitter)
• Silverpop Snares $25 Million In New Funding To Fuel Growth
• Outlook.com VersaTile Ads Debut
• Tumblr Launches In-Stream Mobile Ads Today, Ahead Of Desktop
• AdSense Launches New Link Unit Ad Previews, Tests Showed Higher Click-Through Rates
• AdSense Announces Upcoming Changes to Terms & Conditions
• Twitter Could Announce New Ad Capabilities This Week, Amid Speculation Of New TV Network Deals
• Record Breaking Quarter: Digital Ad Revenues Cross $10 Billion Mark For The First Time
• AdSense Changes How It Calculates And Reports YouTube Earnings
• Mobile Video Views Surge 300%; Tablets Fuel Growth And Engagement
• Retargeting To EBay Shoppers Now Possible
• TripAdvisor Proactively Adopts Viewability Standard With “Delayed Ad Call”
• SimilarWeb Competitive Analysis Tool Shows Traffic Insights By Source; Launching Pro Service
• Quantcast “Compare Sites” Feature Back Up With Expanded Options
• Facebook Home Cover Feed Won’t Have Ads, Yet
• Shopping.com Rebrands As eBay Commerce Network: What It Means
• Study Finds Rich Media and Video Improves Digital Ad Engagement [DG MediaMind]
• Calendar Live Enables Twitter Ad Targeting During TV Shows And Events
• Microsoft Study: Multi-Screen Behavior And What It Means For Marketers
• Twitter Likes Promoted Tweet Results, Pushes Brand Surveys Out of Beta
• Billboard 100 & Nielsen TV Ratings Start To Catch Up With The Online Reality
• New Animated AdSense Format Showcases Ad Headlines
• Big Data: Amazon Set To Sell Advertisers On Its Trove Of Consumer Buying Data