Not intended to burst your bubble, but the number 10,000 means that approx. 10,000 people have tried FH2 for at least one time. Your nick gets added to the list when you have logged in and joined a server once, and you don't even have to play one entire round. Also, there are people who have more than one nickname for FH2. And the hardcore players who play everyday still are only some 200.
But: 10,000 looks nice indeed, and with some well placed propaganda we can use it to let FH2 grow even larger.