When I go out fishing I even turn on a AIS tracking device and post on FB that I am out to let people know where I am. When I post go to marinetraffic.com and search BeeReel. It has actually paid off more than once of people letting me know where the fish actually are (right Daphne) plus letting people know where they aren't, usually my location!
I can only fish an area limited times and why shouldn't others know when a bite is happening?