Wikipedia - a modern day oracle or podium of propaganda?

Wikipedia is fast becoming a destination for those in search of information. The premise behind this public encyclopedia on the Web is that anyone can edit entries on topics. By opening the door to collective editing, one would expect the benefit of a broad spectrum of knowledge, coalescing to provide a fairly comprehensive and unbiased view.
The reality of things might fall short of this utopian vision.
A few particular entries I have recently perused seem to highlight the risks of creating an encyclopedia that anyone can edit.
Look at the entries under the Bible and the Koran. A quick reading shows nary a critical word of these books in the Wikipedia entries. Furthermore, efforts to include links such as the Skeptic's Annotated Bible, the Brick Testament and Skeptic's Annotated Koran are often quickly erased from memory.
It appears that man's selfish motives are reflected in the censoring behavior of those who would deny any critical word towards a religious text. I guess the founders of Wikipedia didn't consider what might happen if you allow free and open access to edit your encyclopedia, and such an endeavor is overrun by religious zealots who hover over their respective religious entries and erase in Orwellian fashion any critical words that might bring a sense of reality to their faiths.
Apparently, religious ideologues are not the only ones guilty of such actions - political ideologues have apparently taken to scrubbing critical comments of politicians they wish to defend.
It is sad to see the potential of an effort such as Wikipedia scuttled by ideologues who behave more like Communist dictators of old in scrubbing any facts that are deemed offensive to their views.