Just chiming in here.
When I first started using Moho a couple of weeks ago, I ran across this interview with Moho creator Mike Clifton:
http://www.bedope.com/int/int09mc.html
In it, he is asked the question, "Why the name 'Moho'?," and here is what he had to say:
"Software names are difficult. Moho doesn't really mean anything as far as the product goes - it's just a name. It started out as a random search through a dictionary, looking for words that felt like software names. Moho doesn't have a very serious "ring" to it, and the product is meant to be a fun thing to use."
Hope I have been of some help.