If Gaia can be defined as a "consciousness" then it should follow that Gaia would like to communicate with "like minded" entities. Individual humans do not in any way possess minds which are like Gaias'. But it might be fair to say that humanity as a whole increasingly does.
Here is another way of putting it. If we envisage a "consciousness space", in which each point in the space represents a set of parameters which gives rise to consciousness, then the point which represents a Gaia consciousness, and the point which represents the global human consciousness (including all peripherals such as the internet etc) are closer to each other than a human consciousness is to Gaia. It might also be reasonable to say that the global human consciousness is traversing through points towards the point which is Gaia.
If we accept this then we can also ask - is there any way to communicate with Gaia? What kind of things are interesting to such a being? How would a message be transmitted? Are we capable of composing such a message?
We can for instance visualise Gaia as a closed consciousness only aware of itself. But this leaves it with no communication channels. If we make it dimly aware of its surroundings, then we can imagine it perceving positive and negative gradients towards and away from things which are good and bad for Gaia.
If we increase its awareness further then we can perceive of it forming plans, developing strategies and holding opinions, and so on.
Once we start looking at Gaia this way we can put humanity into a similar perspective.
A physical metaphor might be that humanity consciousness is a kind of phase-change for Gaia consciousness, like when a liquid turns into a gas. This transformation could be a runaway transformation towards a new. completely different, stable state.
Using a biological metaphor, perhaps humanity is like a malignancy; a consciousness which has evolved and now flourishes within a larger one, and has now reached a point where is it breaking the bonds and causing effects great enough for Gaia to detect.
If the physical metaphor is most accurate, then Gaia and humanity consciousness are not entities capable of communication but instead points along a reaction cycle.
If the biological metaphor is correct then maybe Gaia and humanity consciousness are able to communicate, in the same way a cancer makes itself known to its host. As the cancer becomes more evident and the host suffers, then the host can in turn communicate by attempting to cure the cancer.
I dont believe either metaphor is adequate. The concept of Gaia by necessity presupposes physical and biological systems as a basis. If Gaia was not something qualitatively more than a physical or biological system, then there would be no use for the concept.
You can see as we move from the physical to the biological metaphor that the level of communciation possible between Gaia and humanity consciouness increases. This means that if Gaia's relationship with humanity is richer than just biological, as I have suggested, then the potential for communication is also higher.
But I don't know what exactly it is.
