There are some "spammers" here on Grasnet ..
The other day, I had a post on "What´s for Brunch or Lunch" from a fanatic extremist preaching !
I contacted the Grasnet Administrator and asked to have that post removed.
It was eliminated very quickly.
These spammers are all over the net and especially Facebook.
It is horrifying and one must be well aware and protect themselves, especially if using a mobile.
I use "desk top" for most of my work .. So, I do not have too much contact with this problem however, I also block unknown mobile and / or telephone numbers !! Can be very dangerous ..
Take pre-cautions. Better to eliminate and block than to be sorry.