Going off on a bit of a tangent for a second... I didn't realize that Ars had started charging if you wanted to view/print an entire article instead of viewing it one page at a time. It's a good example of one of the worst ways to monetize a product. I don't feel like I'm being offered a premium product or extra content, I feel like I'm being artificially penalized because I'm not handing over $5 a month.
Better ways to encourage subscribers?
Give non-subscribers access to a deep, but not in-depth, review. Perhaps 5-6 pages instead of 10.
Offer additional content related to the article. Thoughts from other staff writers, head-to-head section with competing products, more examples photos/videos taken of the device.
Include a 2-3 minute "video review" where I can see the device demonstrated in close up HD video.
None of these ideas are particularly groundbreaking, but you feel like you're GETTING something, instead of not losing something basic that used to be standard practice.