If you're a security-conscious web surfer -- or an international traveler who likes to maintain access to US-based video streaming or voice services -- you may already be one of the millions of users of AnchorFree's Hotspot Shield, one of the leading consumer virtual private network (VPN) services. VPNs have been a mainstay of distributed corporate workforces for years, but recently they've gained traction with everyday folk as well. This week, the company launched an iOS app that streamlines the connection process and adds bandwidth-saving compression on top of that, with a modest $9.99 yearly fee.
The principles of a VPN are pretty straightfo
