Here's a Handy Tool

Bug Me Not is a service that allows you to avoid all those pesky registrations:

From their "how to use" page

Background

You're browsing the web and you click a link to an article on a site (let's say nytimes.com) but instead of getting the article you get a screen asking you to login or register. Infuriated at the idea of pointlessly registering for yet another site you turn to your good buddy bugmenot.com
Instructions

STEP 1: Make a note of the website address your are trying to access. For example:
http://www.nytimes.com/cnet/CNET_2100-1024_3-5567274.html
Or even just:
www.nytimes.com

STEP 2: Visit http://bugmenot.com

STEP 3: Enter the address from step 1 into the box and press the "Show Logins" button

STEP 4: You should now be presented with a username and password. Make a note of them.

STEP 5: Go back to the site you were originally trying to access in step 1 and proceed to login with the username and password you noted in the previous step.

With any luck you should be able to access your article now!

Here's another one, but only for the New York Times.