Until then, whatever information NASA may not be telling us about is really just speculation. That's not to say I think the government is above not telling us the whole story. In the meantime, however, I think the discussion of the potential for earth-born colonial life elsewhere would be more productive. Given that, we could explore all possibilities with much more certainty and credibility. No matter what the answer to the face on mars the real question is this.
Lets assume for a second that it is real.
That there is a connection between the sphinx and the face on mars as well as the pyramids. Of course not, god is everywhere, in your children, in your mom in your dad, in your ability to live love and be happy no matter what YOUR religious choice. The sun was also at a 20 degree angle, which is very low and gave the feature long shadows. Have a look and decide for yourselves if it is artificial or not. Of course you do, you need to belive that to get through your pointless life but if someone with some small ability to reason out problems reads this please think about that.