Heard of the social reading app called Readmill? It seems to be on its way to do something big in the e-book industry, by becoming an open-to-the-public service from being an invite-only beta. So, what does Readmill do? Well, basically, you can use it to read books on the web or your iPad, you can take notes, share them with your friends, see what other people are reading and get help from others to find a new book.

So it looks something like Goodreads and Shelfari. But it’s a bit more than that.  It is easy to use and well constructed, because it facilitates reading inside the app itself.  It is not about creating your own library, it’s more active.

You can take your reading social; you can sign in through Facebook and Twitter. As founder Henrik Berggren says, highlighting and sharing elements is a way for readers to annotate books for themselves and to spread their literary self.

Writers can join the readers in the app as well, to share their thoughts. And, Berggren says authors are interested in this prospect.

So that’s basically the good part of Readmill; it facilitates more in reading. But, it still has a long way to go to efficiently do what it set out to do.

If you want to read the public domain books, it’s all fine; the service supports any digital, open or ePub file that you’ve already acquired.

But you won’t have access to Kindle and iBooks, because it is not easy to convince Apple and Amazon in this regard.

Next, you cannot get the book you need just like that; the service helps you discover, not really acquire books. You might know the source, but you will have to buy somewhere else and sync back into Readmill.

Readmill will have to come up with a solution to all those questions, to improve the experience of the 10,000 and growing beta users.  It’s definitely going forward, but it’s a lot of work, and we still need to prove ourselves, CEO Berggren admits.