most postmillennialists do not believe the "thousand years" of Revelation 20 are literal. Nor do they believe that they will somehow usher in the return of Christ. Postmillennial eschatology is so well documented that it is inexcusable that Talk2Action writers would make such repeated errors about basic beliefs. If your web site is dedicated to resisting Christian theocracy, shouldn't you read up on the subject?
I won't claim this constitues "reading up", but a quick search turned up this purported repost of a Catholic Answers item and the Wikipedia entry. Looks like Mr. Ortiz has a point.