Actually, it is a rather important distinction. I do see a real difference between Yekutiel ran out of time or money to keep the site operation or a government (US or Israeli) enforced their moronic anti-terrorism laws and took the site offline. The latter suggests a larger plan to crack down on Kahanists, which is something that all of us have reason to be concerned about.
I take from your answer though that you're merely speculation, and have no definitive answer as to who closed it down, or if this was event intended to be a permanent closure of the site.
I do not know about the case at hand, but whether or not the government took it down or not, you can rest assured that there is ALWAYS a larger plan to crack down on Kahanists, both in the U.S. and Israel.
Kach and Kahane Chai are both considered illegal groups by the United States and Israel. If the site in question was found to have any relation to those organizations, then there is a good chance that one of the two governments did something about it.