A domain is worthless if it doesn’t go somewhere. Don’t misunderstand—you don’t need a highly trafficked blog to satisfy the requirements of your domain “going somewhere”, it just needs to point to something that represents you. If you don’t have to the time or desire to maintain a personal blog, point it at an established social network profile, or better yet, a simple personal portal.
Ideally your domain will point at something you control, like a personal information portal, a personal blog, or something similarly small-scale. If your requirements are modest, and you just want a place to bring together the various fragments of your online personality, an excellent choice is Flavors.me.