The most annoying mistake of using the VPN is that it gets disconnected atimes unknowingly to you while you think it might still be active and then you keep on doing the norms without knowing it was been disconnected due to network glitches it has encounter, while your IP address is already been tracked and marked down on the process, there are some mistakes that are inevitable on a long run that you will discover them the least time you expect seing them manifest, you cannot always remained careful enough in avoiding such kind of mistakes, so I will advise you don't start at all.