Usage of a VPN is vital if you're concerned with security. IPvanish is ok. I also use one that can do "split" channels
You can choose which applications to go through VPN and what not to. Obviously now I will channel ALL bittorents thru vpn.
Browsers, it depends on what I'm surfing
Here's how you can set it. Your VPN provider/software may or may not have such a feature.
http://www.vpnhowto.com/configure-sp...ng-in-purevpn/