I have a little tip for website owners who require a "registration" before they let you look at a story. This practice is going away for the most part, but you still see it in some newspaper and TV news websites.
You are really shooting yourself in the foot. You won't get links from bloggers, which will impact your Google rank and the registration process only serves to decrease page views in general. If your intent is to make money from your site either via page views or click-thru ads you really should stop locking up your pages.
If you believe your content is uniquely valuable to the point that someone is going to go to the trouble of spending time to register by giving you personal information, perhaps you should consider a "view ad then read content" model like Slate uses, or try to sell the content via subscriptions or a pay for view model.
Whatever you might do with the email address, password or other personal information you ask a reader to create...it isn't going to make up for the loss in viewership and links.
