I just joined Amazon.com, and they explicitly state that they do NOT own work done on my own time, unless that work is in direct competition with Amazon itself:<p>"During the course of employment and at the
termination thereof, the Employee shall promptly disclose and deliver over to the Company, without additional
compensation, to the extent that such disclosure could reasonably be expected to be of interest to the Company,
in writing, or in such form and manner as the Company may reasonably require, the following: ... any and all algorithms, procedures or techniques related to the Company's business activities or to the Employee's work with the Company, and the essential ideas and principles underlying such algorithms, procedures or techniques, conceived, originated, adapted, discovered, developed, acquired, evaluated, tested, or applied by the Employee while employed by the Company, whether or not such
algorithms, procedures or techniques are embodied in a computer program...However, the Company recognizes that
the Employee may Conceive and/or Originate certain Products and/or Services which are unrelated to the activities of the Company, unrelated to the planned activities of the Company, and unrelated to any reasonable extension of the activities or planned activities of the Company ("Unrelated Products and/or Services"). The parties therefore agree, the other provisions of this Section 1 notwithstanding, that...any Unrelated Products and/or Services Conceived and/or Originated by the Employee, even while employed by the Company, shall not be considered Disclosure information..."