There’s been no shortage of interesting marketing stories that have caught our bloggers’ eyes this week. We wrote about the problematic nature of measuring influence on Twitter in the results of a new study. In the shifting world of social media, users place their trust in apparently ‘objective’ ratings of popularity and influence. Unfortunately, the reliability of such ratings took another blow with the changes to Klout’s scoring system. Klout scores indicate influence in the Twitterverse, and many frequent Tweeters found their scores downgraded. As it turns out, influence is a much-shifting thing.

We learned never to underestimate celebrities – especially the scenic movie stars. Leonardo di Caprio has taken it into his pretty little head to invest in Mobli, a social media startup which describes itself as a “real-time visual media platform made up of subject-based channels such as people, places and topics.” Its catchy slogan is “See the world through other people’s eyes.” The money’s there though – di Caprio led a $4 million round of funding and will be joining the company in an advisory role. The Mobli CEO described di Caprio as a “a very, very smart guy concerning marketing.” Bringing a new meaning to the phrase “angel investor?” Perhaps.

Frankly, we’re happy to have Leo on board, because it seems there’s trouble afoot in the world of marketing. Hot on the heels of the IBM CMO study showing that CMOs are worried by issues such as data and social, in a recent survey by Marketing magazine, 42% of respondents believe there’s a talent crisis in the industry. It’s become increasingly difficult to recruit marketers that respond to both commercial and consumer interest. If you’re on the hunt for some really outstanding talent to work on your next campaign, look no further. Brief the Exchange.