You can sell products. You can sell services. You can sell software. Vaporware, even. And now, it seems that you can sell imaginary objects that exist only in an online game environment.

Julian Dibbell hopes to support his family by selling artifacts to Ultima Online players for real-world money. In one experiment, the author of My Tiny Life -- who recently moved from San Francisco to South Bend, Indiana, it seems -- earned $1,000 in three weeks.