I'm not questioning this particular site, but if you're unfamiliar with a project, trusting a "who we are" link is just about the worst way to verify it. You're bound to be p4wn3d. Anyone can claim to be anyone.
Personally, I'd look for a link from e.g. eff.org, or a similar trusted site.
Why should you trust me? I'm Larry Page. Why should you trust that I'm Larry Page? Simple. Look at the "Who am I" part of this post.
Who am I: Larry Page, obviously.
As a footnote, I'd never run something like this on my computer, but if it's just IPs you want, an RPi image would get you my IP.
