Then you should check out some of the results of this survey that Blackromancereader posted on her blog.

Actually, if you really want to know more, you can download the full PDF yourself from here.

Some interesting points:

When asked the question Why haven't more African-American authored books gained large mainstream
readership? 62% of the respondents said that most African-American authored books are only marketed and distributed to an African-American audience.

When asked "Was the last book you read written by an African-American author?" 52% of respondents said no.

Hhm, so black people don't just buy black books. Who'd a thunk it?

When asked what was most important to their social standing, respondents listed a stable family first, a good education second.