E Books Your New Writing Career?

With the Kindle having dropped below the £100 sterling mark, and Amazon announcing that e-book sales have outsold paper books for the first time, it is clear that E books are here to stay.
So the only argument left is which platform is going to win out and which e-book reader is the best.
For writers it is more and more important to start getting their content on line.
If you are already published- check the contracts on your back list and see who owns the electronic rights. There are many ways of launching your e-book career as an author, especially if you already have books listed on Amazon, your new e-editions can be listed along side.
If you are not yet published, then why haven't you considered e-publishing as a platform? If you have a series of 'rave rejections' it just means that no paper publisher can see a big enough market to justifythe risk of publishing your book on paper. But if it's good enough for a rave rejection, then there are plenty of people put there who will read it, and enjoy it, and tell their friends. But they can't read it if it's not published!