Just a few months after being acquired by Pinterest, Instapaper is making its premium tier subscription free for everyone. That means everyone will have access to a few nifty features without any additional cost: Full-text search for all articles Unlimited Notes Unlimited speed reading Text-to-speech playlists “Send to Kindle” via bookmarklet and mobile apps Kindle Digests of up to 50 articles An ad-free Instapaper website Current premium subscribers will receive a prorated refund “in the coming weeks.” The move is part of Pinterest’s strategy to be more than just a place to collect not just visual content, but articles and…

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