Ordinarily when I find something like the usefulness of Instapaper with the Kindle, I worry that Amazon may be moved to take steps to block the feature based on the reasonable notion that it could cannibalize K-content revenues. But here’s a guy who was already using Instapaper, had been anti-Kindle, but when he learned that the Kindle and Instapaper played nice together it was the tipping point in persuading him to buy a Kindle 2. I agree with him that Instapaper rocks, with or without a Kindle.

Here’s my March 30 Kindle Nation post about the genius of Instapaper for Kindle owners.