I'd be a bit wary of it. It's a strangely put together program. I tried to download the private version. I got a little java file which supposedly downloaded the actual program. After it did it's thing, including checking for updates, which my firewall alerted me to, the tarot program opened and took me to a setup wizard. I looked around in it a bit but didn't want to fiddle with it right away, so I quit the program. Now I cannot find the program anywhere! It didn't get installed on the desktop, or my applications folder, or anywhere else I would expect it to go. It apparently vanished! Now I'm left with the original little downloader file (only 4K, so that can't be the whole program). What's even stranger, is that my firewall keeps a list of known apps that have permission from me (or don't) to connect to the internet. There is no jtarot or any similar sounding program on the list. It should have immediately made it onto the list after it was downloaded, and also after it checked for updates.
So, to summarize. It's very strange. I hope it wasn't a trojan of some kind.