It seems that they mainly offer DNS and email hosting. A non-US DNS provider has benefits for controversial sites where you fear the US government will intimidate US-based providers into shutting the site down, but I don't understand how a DNS provider can be "NSA-free" for what is primarily a publicly-accessible service. Likewise with email, the Internet uses plaintext SMTP for email transactions, so it seems that most of your protection would come from using something like PGP, not from your ISP.