Which Sci-Fi Writer Are You?

According to one of those silly online tests:

I am: James Tiptree, Jr. (Alice B. Sheldon) In the 1970s she was perhaps the most memorable, and one of the most popular, short story writers. Her real life was as fantastic as her fiction.

Which science fiction writer are you?

The embarassing part is, I've never heard of him/her (though I've probably read him/her -- I've read a lot of SF in my time).