I published the above collection of sci-fi short stories back in late 2009 and it just never went anywhere.
Much more recently I decided to also publish it as an e-book through Amazon’s Kindle Direct Publishing. Also I made it free for about 5 days and available on the Kindle Lending Library:
Quite a few people downloaded it when it was free and there have been a few sales afterwards. This approach seems to have given the book a shot in the arm.
Certainly though I think any author publishing today should look at publishing both a hard copy and digital book.