Many people wonder about the legality of what they are using the dark web for - is using a pay per click ad illegal? Many times, it can be considered legal if the person purchasing the ad is using the ad for a business reason. They may be using it to get people's attention to their website or for research and they are not sharing the link directly with the end user. However, if you're just advertising your own site or getting visitors for your own personal use, it can often times be considered a form of spam and you can be held responsible