The web home of national best-selling writing couple, J. Steven York, and multi-genre novelist Christina F. York (who also publishes mystery as Christy Fifield and Christy Evans), between them authors dozens of published books.
Steve - I think they can. Look up Michael Stackpole's stories on Kindle and you'll find he has at least a semblance of a cover - even for his short stories. Mine don't - I'm no artist and haven't made the time (although it is on my list of important promotional things to pay attention to, which is far bigger than my time assuming I need writing and earning real money time). You've also got to drive people to a book - even an ebook - and I think the ads will need images that are essentially covers.
i hate that ebooks dont have the REAL covers.