Do you still need your own website?

Facebook, Twitter, and LinkedIn draw a growing share of web traffic, but Donna Talarico writes that authors still need websites: "I’ve overheard and read online conversations in which people say authors no longer need websites. I argue, strongly, that is not the case. Authors who choose not to create an online space they can completely control are missing an ideal opportunity to promote themselves and connect with their audience." She includes tips for creating a site.