This is a direct quote from the opening page of The Official Entrecard E-Book: Welcome to Entrecard and get ready!
This is exciting! You've decided to use entrecard to help your blog grow. With Entrecrd, you will not only find a significent amount of quality targeted traffic coming your way for free, but you will discover a whole new way to advertise on thousands of blogs.
Everything that you need to know and want to understand is carefully explained in the Add New Blog feature, Entrecard e-book . You do not want to miss out on this!! Here is just a few examples of what you will learn - l. Placing a Widget on your Blog. 2. Earning Entrecard Credits. 3. Purchasing Advertisement. .... this is just a beginning. Are you intrigued yet? Then all you have to do is type in entrecard.com. or click on it here.
Then you put a Entrecard widget (explanation in e-book) and other Entrecard users will advertise there, and visit your site and "drop" their Entrecrds on your widget. (Look up at the top of my blog and you will see a "widget" and the letter E and the word drop.) Now if you are not familar with the whole Entrecard thing it has to sound confusing....but you will soon catch on.