Constructing a BIG text  
The following quotation from the core section of our collaborative webtext is a particularly appropriate way to introduce my own contribution to this collection. I am hoping that I can use it as a way in to my own discussion about CHAT (Cultural-historical activity theory), or at least about the CHAT-related ideas that I use to inform my research and teaching.

It's not about the web or television, and it's not electracy. It's about attending to semiosis in whatever materials at whatever point in the activity.

This excerpt highlights the point at which I entered the CHAT framework—from a position as a researcher interested in digital media. However, my interest in digital media has been exponentially expanded by the kind of CHAT-based remapping we've discussed in the core text.