Avinash Kaushik’s keynote kicked off SES London 2012 today, and what followed was a day filled with tips on landing page optimization, PPC, link building, and more. Here's a roundup of today's live blogging and coverage of SES London 2011.

Google’s circumvention of Safari privacy settings is just the tip of the user tracking iceberg. Privacy and user experience are in serious conflict, with billions of advertising dollars at stake as search and social converge.

Russia’s top search engine Yandex has made two big moves on the social search front. In addition to incorporating content from popular social networks into its search results, Yandex has partnered with Twitter to make tweets searchable in real time.

Microsoft accused Google of circumventing Internet Explorer user settings in a blog post Monday but forgot to mention this information was released two days ago and also named Facebook as a culprit. Google quickly sent out a rebuttal.

When it comes to gut feel, creating vivid mental images and positive associations with your ad copy starts to carry the day. It’s the subtleties of mental images and emotional associations that determine winning and losing PPC ads.