Whenever I come across this argument, I quickly realise that this is somebody who has carried out zero research on the subject, and somebody who has no idea how a controlled descent to the Moon's surface was carried out.
The level of complexity to hoax so many missions is beyond staggering. I will not go into detail to list the numerous complex requirements. Suffice to say, NASA supposedly went to the trouble of manufacturing film and video to match prevailing weather patterns on route to the Moon, but didn't bother doing a simple crater? Something that could be dug up in 20 minutes!
I will simply discuss Apollo 11, since for one main reason, this is the most relevant. Namely, not cutting off the descent engine at the correct time, which would result in the most surface disturbance.
http://www.braeunig.us/space/hoax.htm
"Let's consider several facts: (1) Although the Lunar Module descent engine was capable of 10,000 lbs of thrust (the usual hoax advocate's claim), it was throttled down to below 3,000 lbs as it neared the lunar surface. While still several feet above the ground, the descent engine was shut down as probes, extending 5 feet below the footpads, sensed contact with the surface. (2) The LM descended at an angle, moving laterally across the ground. When the astronauts identified a suitable landing site, the LM leveled off and dropped to the surface. The LM did not hover over its final landing site for any significant length of time. (3) The Moon's surface is covered by a rocky material called lunar regolith, which consists of fine dust particles, glass spheres and a jumble of large boulders and rocky debris. Lunar regolith has many unique properties, the most obvious being that the particles are very jagged, which causes them to interlock. When subjected to pressure, the regolith will resist, almost like solid rock. (4) In a vacuum exhaust gases expand rapidly once exiting the engine nozzle."
At the start of the EVA, this is what Neil Armstrong had to say:-
109:26:16 Armstrong: Okay. The descent engine did not leave a crater of any size. It has about 1 foot clearance on the ground. We're essentially on a very level place here. I can see some evidence of rays emanating from the descent engine, but a very insignificant amount.
Then they took several pictures of underneath the Lunar Module.
The suggestion is, that the finest minds in science, remembered to "fake" gravity, the telemetry data, weather patterns to match et al. - but forgot to put a crater in, after talking about it on live TV, and photographing it.
That is just plain dumb.
The contentions made by Jarrah White taken apart:-
http://www.youtube.com/watch?v=_Mrdkw26QD0
http://www.youtube.com/watch?v=K66YpKaimdI
http://www.youtube.com/watch?v=M3x8UbX-EHo
http://www.youtube.com/watch?v=BueSyXC8cf8
http://www.youtube.com/watch?v=1Ivsy2Mo9_s
http://www.youtube.com/watch?v=yDs6-3Yt0Yk
FINALLY
Here is a thoroughly well written assessment of the Apollo 11 landing on the Moon, specifically relating to the engine power, and the blast crater:-
http://www.braeunig.us/apollo/LMcrater.htm
