Of course, you’ll have the usual worries about publishing a book this quickly and easily. How will I make money? What is the cost of publication? What about quality control standards? With Smashwords, there is no cost of publication. There is an on-site marketing guide to help you make some money, but beware – very, very few authors make a substantial amount of money. If you want to make more money, thoroughly research marketing and create a careful strategy.
As for quality control, Smashwords doesn’t have an in-house editing team, so you’re on your own. I’d recommend letting as many impartial people read your book as possible. Look for those who have a background in English or who work in a field where they write a lot.
But if you simply want to get your work out there and you’re not terribly interested in money, give Smashwords a shot!