Patricia Arquette is shutting down her Facebook page after reportedly becoming the target of an Internet stalker.
 
The 43-year-old star invited strangers to contact her via Facebook as part of a "social experiment" but one man has left her fearing for her safety.
 
In a final post, Arquette told her 2,900 Facebook friends not to "friend anyone here that you don't personally know." She added, "This is important! Just because they were on this page doesn't really mean they are safe!"
 
Arquette has insisted she will keep in touch with her friends via Twitter and thanked fans for sharing their "love, humor and sadness" with her.