I know I already updated today about PlayOnline, but I couldn't resist. I registered today by the name of "Cid Highwind" and they asked for my address so they could send a free VIVI doll! Awesome! I suggest you register early if you plan on getting a doll, because these things are ususally only good while the supply lasts. Another good reason to register today is to get a good name. Who knows, these could be our user names for FFXI.
Just to recap, registering at PlayOnline.com gives you a free guide to Final Fantasy IX as well as a free VIVI doll. Register!