Sometimes it kills your promotion, especially if you set login ads. Visitors navigate to the next page without ever seeing your ad.
So you need to choose between
two difficult options. Either you sacrifice visitors or you turn off tracking.
Some fraudsters in the safelist market exploit these weak points. Some sites deliver bot traffic because their admins know that most people don't track.
They are bragging with the number of hits their sites deliver.
Gary Halbert, the best copywriter ever lived, once said: "HITS stands for How Idiotes Track Success".
Remember, you don't need hits, or visitors, be they bots or bored strangers.
You need results: "Signups" & "Sales". Period.
Eight years ago, my coach did a deep analysis on this topic and advised his close friends to avoid using some traffic sites. Thanks to him, I saved hundreds, if not thousands, of dollars.
Three years ago, I analyzed data from about half a million visitors to my pages and discovered that some
popular sites didn't convert at all, while other sites with the same audience converted better than email lists.
Here is an excerpt from my spreadsheet containing statistics from more than 200 traffic sources: