just put up a wordpress blog on it, type a bit for a "welcome to this site" intro, add a sig link here, and you should be set in a few days or at most a week.
But no point having it indexed unless it features in SERPs. All advice above is good but IMO you need some commitment to make it worthwhile.
In my experience it's best to either park or go hard on development/seo - those that I've tried to do halfway have been by and large a bit of a waste of time....