Jurisdiction – From the point of view of privacy, nothing is more important than the jurisdiction in which a VPN provider operates. VPN providers based in countries like the UK, the US, Canada, New Zealand, and Australia have to follow data retention laws and cooperate with agencies for surveillance purposes. However, if a VPN provider truly follows a zero-logging policy, then users can consider their privacy secure even if the VPN is based in one of the countries as above. Nonetheless, given the choice, you should avoid VPNs that fall in the jurisdiction of agencies notorious for their surveillance programs.

Latency normally results in a poor VPN connection. If you are connected to a VPN server that is far from your location, the chances are that your VPN speed will lag. An ideal way to turn your VPN account to a fast VPN connection is to choose your VPN location smartly. Your connections will become a high-speed VPN if you select a server that is near close to your original location, and it not overfilled.

To help ensure confidentiality of the data as it traverses the shared or public transit network, it is encrypted by the sender and decrypted by the receiver. Because data encryption is performed between the VPN client and VPN server, it is not necessary to use data encryption on the communication link between a dial-up client and its Internet service provider (ISP). For example, a mobile user uses a dial-up networking connection to dial in to a local ISP. Once the Internet connection is made, the user creates a VPN connection with the corporate VPN server. If the VPN connection is encrypted, there is no need to use encryption on the dial-up networking connection between the client and the ISP.
Hotspot Shield depends on a custom VPN protocol that's not been publicly analyzed by independent experts. We don't know how private or secure it really is. The company has been accused of spying on users (it denies the allegations), and complaints abound online about Hotspot Shield software installing on PCs without users' permission. All this, and the company's U.S. location, may scare away customers who want to protect their privacy.
An OSPF-routed network can be subdivided into areas, which are collections of contiguous networks. All areas are connected together through a common area called the backbone area. A router that connects an area to the backbone area is called an area border router (ABR). Normally, ABRs have a physical connection to the backbone area. When it is not possible or practical to have an ABR physically connected to the backbone area, administrators can use a virtual link to connect the ABR to the backbone.
In addition to running a local test using the server closest physically to my location, I also run tests on US, UK, Canadian, Australian, Dutch, German and French servers (assuming, of course, the VPN provider supports that country). These seven are the locations to which users most commonly connect. You can find the results on each provider’s speed test page.
Think about it this way: If your car pulls out of your driveway, someone can follow you and see where you are going, how long you are at your destination, and when you are coming back. They might even be able to peek inside your car and learn more about you. With a VPN service, you are essentially driving into a closed parking garage, switching to a different car, and driving out, so that no one who was originally following you knows where you went.