as led to some changes in the free version of the site:
- An increase in advertisements on the free site.
- Text and PDF export options now require the user to set up a free account even though they existed before the introduction of Wolfram Alpha accounts.
- The option to request extra time for a long calculation used to be free but is now only available to subscribers.
- Step-by-Step limited to 3 for free users (previously uncapped)(no longer available).
InfoWorld published an article warning readers of the potential implications of giving an automated website proprietary rights to the data it generates. Free software advocate Richard Stallman also opposes the idea of recognizing the site as a copyright holder and suspects that Wolfram would not be able to make this case under existing copyright law.
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