Observers of wild Spinarak had long known of the changing expressions on their back, which appeared to have no relation to food or comfort or anything else which produced emotions. This is in sharp contrast to their trained counterparts, whose back emotes like the faces of humans and indeed many pokemon. At the time, the observers had concluded that trained Spinarak learned to mimic humans, and considered them quick learners, yet a good deal of evidence suggested that the speed at which they learned was not merely fast, but instantaneous! Furthermore, web fibers were often found a long way away from any Spinarak, yet always seemed to lead to one – but what purpose could such an enormous web have?
It was only a few decades ago that the mystery was unraveled. Much like the great networks of our modern age, Spinarak are connected by wires of silk. Interlocking webs move throughout most of the forests which these pokemon inhabit, under the ground, inside trees, and anywhere else the durable but thin strands would not be easily disturbed. Alas, there is no "World Wide Web" for them, for the material they use is still too often broken; they are lucky to connect one forest to another.
The Spinarak do not use these webs to catch prey, but to communicate, sending signal beams across the wires to converse. At first, the network was strictly used for practical information, such as the locations of food, predators, and pokemon trainers, and upcoming gatherings. But in time, work gave way to leisure, and the network is now used for everything from love confessions and gossip to local wonders and oral storytelling. The Spinarak of old were bored in their webs, but today few of them ever want to leave.