Someone with a whorespace generally uses their Myspace to post pseudo-artistic black and white photos of themselves looking 'sexy', or pictures of themselves in little clothing.
Generally a whorespace is used when someone is fishing for compliments. People with whorespaces are often attention-seekers, and will often use the Myspace Bulliten function to tell everyone they have new pictures uploaded, with the request "Comment plz?", generally translateable as "Tell me how hot I am!" They also often attempt reverse psychology, labling photos with phrases such as "LOL I'm so fat." to get responses like "NOOOO You're not! You're so hot, I wish I had your boobs!"