http://www.dataasylum.com/gangstalking-targeted-individual-information.html
It looks like their take on this is that it is all being done with nano-bots. I am not sure how accurate their info, but I will post it:
"The overall purpose of leveraging this technology directly against an unsuspecting, normal person such as yourself is to get you to act out in some way. They want you to externalize the events they are creating in and around your life. For example, the handler (or more accurately a supercomputer automating everything) is constantly controlling people around you such as family members to get them to suggest you have mental problems - the your crazy theme comes up a a lot as it works well against people who do not understand how everything is works. The people who have designed this are attempting to create a false reality around the targeted individual, the reality constructed is dependent on that targeted individuals situation. For example they attempt to find something that the targeted person does not like (eg. dogs?) and then everywhere a targeted individual goes there will be dogs there. The side effect is a targeted individual begins to draw unwarranted conclusions from the actions that are happening around them. If pushed to the limit the targeted individual may begin to go crazy which they will then amplify as shown in Black Limousine (2010). Another example is physical assault, they could hurt your body at the exact same time you hear a random car horn from the public; over time you psychologically connect the two events. They then hope you will subsequently act out against the public to harm someone you now perceive as bad or out to get you. This is then the dishonor (see Meeting Evil (2012) below) they need to move against you some more."