David Pann addressed concerns Thursday at a San Francisco Forum on whether Bing will follow Google's lead regarding changes made to AdWords Enhanced Campaigns. Some sophisticated marketers believe the change brings inefficiencies for those with specific targeting needs. He tells us that "while enhanced campaigns can provide greater management efficiencies and improved mobile traffic performance for certain advertisers, our customers have expressed concern that this change may introduce inefficiencies for more sophisticated advertisers or those with specific targeting needs." Read the article here.

Marissa Mayer wants to focus on mobile, but Yahoo lacked the technology to make it happen -- until the search/portal acquired Summly. Personalization will continue to play a key role in mobile technologies. And it has the potential to change the search game for Yahoo, according to Nick Roshon. He also analyzes whether this type of technology will kill search engine optimization. Not exactly attribuable to the death of SEO, in my opinion, but it will absolutely change the game. Read the article here.

How did the Rolling Stones' teaser Twitter campaign reach 28 million users? David Moth compiles a list of the most interesting stats for the week of April 1. He tells us that when the tour was revealed the count rose to 1,800 uses of the hashtag in one hour, which would account for fewer than 1% of the band’s 332,434 Twitter followers. And also tells us a YuMe survey of 1,340 people that own at least one Internet-connected device also own multiple smart devices. Read the article here.

Ever wonder about Google Analytics' roots? Celine Roque tells us about the history of Google Analytics, its founders and software. She starts with Urchin and travels to Analytics, winding through the years from 1995, when the founders of google Analytics built a company called Web Depot. The company had four co-founders. Read the article here.

When you open a Web page and see the color red, does it influence you to scroll down the page or click on the buy button? Why are most Web hyperlinks blue? Colors are a great influencer. In a study from Kissmetrics, 92.6% of people say their visual dimension is the No. 1 influence on purchase decisions. For example, Performable changes the color of a call-to-action button from green to red, resulting in a 21% incease in conversions. The research also finds it takes most 90 seconds to make a subconscious judgetment about a product. Read the article here.

Multitasking began in school while watching TV and doing homework. Now multitasking moves to watching TV and texting or tweeting on a mobile device, or surfing the Web on a tablet. Advertisers may have to work harder to get the attention of multiscreen consumers, but the time they spend in front of online content continues to increase. Among those who own a smartphone, TV and computer, 60% of consumers say they multitask. Add a tablet into the mix and that number rises to 65%. Read the article here.

Google Glass will face competition from its closest Chinese counterpart, Baidu, which runs the top search engine in China. Baidu Eye (code name) will have an LCD screen mounted on a headset, image recognition, voice control, and bone conduction technology, which should maintain better sound clarity in very noisy environments. The search engine isn't clear whether it will release the glasses for retail.

Keep bids up to date. If campaigns run out of a budget, the ads will stop serving up in Bing. Don't forget keyword targeting. Track success through reporting and conversion tracking. Peter Haubold provides four main tips and details each to boost returns on investments in Bing ads. Think of it as a checklist to keep campaigns in shape. Read the article here.

Search marketers that need help setting up product listing ads (PLAs) might want to turn to a new guide to the process. It serves up insights on product feed specifications and required attributes, ways to manage and upload data feeds, and methods to use Google spreadsheets to support the campaigns. Read the article here.

U.S. consumers spend an average of 2 hours and 38 minutes per day on smartphones and tablets, with 80% of that time in apps and 20% on the mobile Web, according to Flurry. The study finds that all mobile browsers combined, which are considered a category of apps, command 20% of the consumers' time. Gaming apps remain the largest category of all, with 32% of time spent. Facebook is No. 2 with 18%, and Safari takes No. 3 with 12%. Why do marketers need to know? Search doesn't only live in engines like Google and Bing. Read the article