The rise of privacy as an online issue is creating the greatest challenges to brands and marketing. Once again, it’s interesting because these issues are not primarily about technology, but consumers' (aka people’s) views about what they feel comfortable with. In some cases, this means people don’t want to hand over any information at all. For example, in the case of brand driven communities that rise and almost immediately fall. In other cases, the exchange is almost immediately recognised as a good deal and the users flood in and happily hand over very private details. Whatsapp is probably the most striking example of all in recent years. Prior to its launch the idea of handing over your phone book and contact list to an anonymous corporation may have seemed beyond the pale. However, all it took was the promise of free SMS, hardly a gigantic offer on the face of it, and the users flooded in. Neither did its acquisition by Facebook change that. The exchange was still seen as sound.