Marketers by now know the fast pace at which mobile continues to scale in the United States. Now the question remains: How will consumer behavior change as search evolves on handsets and tablets? Macquarie Equities Research and Efficient Frontier released results of a joint study Thursday that highlights search advertising spend patterns. A webinar to explain the findings will follow on Friday.

Google provides a platform for search engine marketing in the United States, but there are other search engines worldwide that offer a local touch. Those who couldn't make it to OMMA Global in San Francisco on Tuesday missed an opportunity to hear from Arkady Borkovsky, CTO at Yandex Labs, the technology arm for the top Russian search engine, and Laetitia Kieffer, who heads up the Dell account for search globally at MediaCom. Rob Griffin, senior vice president and global director of search and analytics at Havas Digital, moderated the discussion.

Marty Weintraub wanted to know what triggers videos to serve up in search engine results pages (SERPs), so the founder of search engine marketing firm aimClear ran a study released at OMMA Global in San Francisco Monday looking at 978 keywords across 24 categories in Google, Bing, Yahoo Video, YouTube, Daily Motion, Vimeo, and Blip.tv, among other channels.