This is an outgrowth of last year's trend, even though these boxes have been around a few years now.
We don't quite know who's doing the talking, but whoever it is, their bubble is popping up all over. This Logo symbolizes communication, whether it be from the company or between its customers. LifeLogger, for instance, uses a speech bubble with a smile in it to illustrate how users can communicate through them to friends. They continue the use of three-dimensional speech bubbles in creating avatars for their users, as illustrated to the right.
In this way, the idea of communication represents the person themselves, showing the importance of contact.