For instance, I started a little hobby blog a few weeks ago. I have a hobby of collecting funny pictures, so I thought it might be fun to filter them yet again, then tag the hell out of them and post them on a blog. Who knows? Might have a lot of traffic one day. If nothing else, it'll make it personally easier for me to find my pictures. (shameless plug: http://caption-of-the-day.com)
Pretty simple, no? I already have the pictures. The tags should be pretty obvious. It's just select one, then write a tiny bit of text describing it, then post.
For some reason even this tiny amount of work quickly becomes a chore. I've started doing exactly what this author is doing: schedule the post first, then use the upcoming deadline as a motivator.