So, let’s go back to 1998. You’re a new writer winery and you want to establish a permanent residency online. Which would be wiser: Having your own site at your own domain, or putting up a site at GeoCities?
It's easy to get caught up in the swirl of excitement around Facebook, but your winery website is still the anchor for your online presence because you control it.
(By the way, Scalzi writes science fiction, and if you haven't read Old Man's War , you're missing something.)