Writing in Multiple Genres

I began my publishing career with a contemporary romance novel. This choice of genre was quite deliberate: it had nothing to do with the huge market for these books, and everything to do with the launch of Kensington's Arabesque imprint in the 1990s. Kensington was the first major publishing house to feature a line devoted to love stories about people of color, the absence of which had often been lamented by my friends and colleagues.

My publishing contract at the time included an option for a second romance novel, so I wrote one. It got caught in the meltdown of the publishing house, and I eventually recovered the rights and published it myself. Since then I have gone on to publish in several genres, using different names to keep things nice and orderly. I use my given name for literary work, and different pen names for historical fiction and interracial romance. I have a mystery series in the oven and I plan to use a variation of the Liane Spicer brand for those.

It can get a trifle confusing at times, I admit. In addition, I have a science fiction novella that I'm considering turning into a series, a completed memoir, and two works of nonfiction. Which names should I use for these? Should I come up with a new one for the SF series to eliminate the risk of confusing (and losing) my readers in a particular genre?

The bestselling author Judy Blume uses just one name for her juvenile, YA and decidedly adult titles. Others such as JK Rowling and Sue Grafton use different names for different genres.

My question is: How do you handle the multi-genre issue? Do you stick to one genre? And if you write in multiple genres, how do you handle the name challenge?