The problem with these free or cheap public VPN services is your IPs (or even blocks) end up blacklisted into the worthless part of the Internet pretty quickly, unless you're paying for a dedicated IP per customer (which I doubt you are, given the price point, but maybe?). Ideally, an IP assigned out of a netblock which isn't at risk for this, too (same problem applies to using Amazon AWS IPs for VPN termination, actually).
I definitely like the idea of pervasive VPNs. There are decent mobile clients for iOS and Android now, too.
There's also the "can we trust you" problem -- if you're saying "use us for super secret stuff", I'd have a higher level of trust required, but you're marketing this as "protect from casual wifi sniffing", and I trust you as completely random people more than I trust wifi networks. If you had a real privacy policy with some kind of technical enforcement and audit, I could trust you as much as say Comcast or Sonic (who would only monitor me with a warrant or good cause, if only because I'm insignificant to them).
The problem with these free or cheap public VPN services is your IPs (or even blocks) end up blacklisted into the worthless part of the Internet pretty quickly, unless you're paying for a dedicated IP per customer (which I doubt you are, given the price point, but maybe?). Ideally, an IP assigned out of a netblock which isn't at risk for this, too (same problem applies to using Amazon AWS IPs for VPN termination, actually).
I definitely like the idea of pervasive VPNs. There are decent mobile clients for iOS and Android now, too.
There's also the "can we trust you" problem -- if you're saying "use us for super secret stuff", I'd have a higher level of trust required, but you're marketing this as "protect from casual wifi sniffing", and I trust you as completely random people more than I trust wifi networks. If you had a real privacy policy with some kind of technical enforcement and audit, I could trust you as much as say Comcast or Sonic (who would only monitor me with a warrant or good cause, if only because I'm insignificant to them).