There’s nothing like a brand-new medium to put marketing departments into overdrive, and it would be hard to find a better example than the recent, rapid-fire arrival of live-stream video apps Meerkat and Periscope.

Meerkat fairly stole the show at this month’s SXSW Interactive in Austin, Texas, where startups, brands and agencies used it to share live music performances, session videos and parties. Fast forward to this week, and Twitter — which had already taken the preemptive step of cutting Meerkat off from its social graph — launched Periscope, its own, recently acquired contender.

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