As far as I know he's stopped developing it.
I had it, but it was rarely working, so in the end I took it down.
However....a solution:
Go to
http://www.iespell.com/ and download their product. It's amazing - and free!! Any website where you input text can be spellchecked! It attaches to your browser and is so cool!! Just tell all your members to download it and you're sorted.
Unfortunately it's only for IE, Mac users are stuffed, but the majority of your users will likely be able to use it.
I just double checked I got the right url, and it said the bandwidth was exceeded, so keep trying. Be well worth it. You can add your own words to the dictionary, and it can choose from American, Canadian, or English spelling. Groovy, 'eh?