Mindfulness and Consumption, where does it end?

In a recent blog post concerning mindfulness and our consumption of food, I asked readers to consider ways in which we can be mindful as consumers. Tricycle blog reader Alan, building on the initial question, posted the following:

Your question, “is it possible to remain mindful of all that we consume?” has a simple answer: No. Consider the *simple* act of posting this message: I have no clear idea as to the environmental costs of computer manufacture, internet usage, etc., nor can I, but I consume anyway. That said, I think your question makes an excellent point because so much of the advice we are given, “be mindful about consumption,” might seem to imply otherwise. Perhaps a better approach would be to ask, “Given that full mindfulness of all that we consume is impossible, how can we approach consumption most skillfully? Towards what aspects of consumption should we direct our minds and hearts

Is striving to give full mindfulness to all the we consume really impossible? If so, what areas of consumption do we abandon and what areas do we direct our mindfulness towards?