I like that it allows me to connect my computer with other computers in our office network, so we can share files without having everyone use different devices or software (such as dropbox).
It's easy for people who aren't very tech-savvy at all! We've been using this program since last year when they first started offering free accounts - but now you have more options than just getting an account from them directly; there are many third party providers out their which offer similar services such VPNs etc., however if your looking specifically into proxy servers then definitely go through ezProxy because of how well everything works together once installed/setup correctly :).