When Facebook was launched, it felt defiantly 'young' - a fun place for young Millennials to waste time together. But fast forward to today, and the average user age has skyrocketed. As their parents start logging on, teens are abandoning ship. Has Facebook lost its cool?

“Google policy is to get right up to the 'creepy' line and not cross it,” says the company's CEO. But when does insightful personalisation become intrusive? And how do brands build lasting relationships with consumers concerned about being spied on?

Easy-to-use personal security measures are a welcome antidote to the privacy fears that plague a post-PRISM scandal world. But are encrypted text messages a necessity, or just a fan to the flames of a paranoia epidemic?