Just when we thought it was over, the saga surrounding Canonical‘s controversial integration of Amazon.com search features into Ubuntu resurged this week as Richard Stallman, president of the Free Software Foundation, denounced the feature as “spyware.” Depending on whether you think Stallman is a messianic visionary or a self-caricaturing embarrassment to the open source community, his thoughts may or may not sway your opinion. Either way, though, they highlight the huge challenges Canonical faces gaining user acceptance of its policies.In an essay published Friday, Stallman complained about a new feature, introduced with the release of Ubuntu