The spelling errors in many Pistonheads posts suggests there are large numbers out there who might well suckcrumb, oops succumb to the idiots theory. It can be hilarious sometimes.
The spam folder in my emails tends to fill up regularly. A quick scan for possible genuine emails and then empty without reading them is a regular task. I have queried a few with the genuine originating company/organisation that sneaked through.
We do get very occasional phone calls but letting them go to voicemail and adding them to the blocked number list is working.