[vanderreeah]

A couple of points that don't seem to have been mentioned (hopefully because you're all better-adjusted than I am):

1) Fear: I am scared of mess, of failure, of feeling incompetent or overwhelmed. I will therefore avoid tackling a task because that way I avoid the feelings of inadequacy, disappointment, or failure in the face of an incomplete result. In other words, I want everything to be perfect right away, and since that can never be the case, things don't get done.

2) I believe there is simply something (which I am in no position to specify) addictive in internet-based fora. Whether it's the bite-sized demands on our attention, a voyeuristic synapse being tickled by viewing the opinions, arguments, etc. of others, or the illusion of connectedness - both of things to each other and of us to the world - the internet in itself (for me at least) encourages procrastination.