I deleted 20 or so but should have taken note of the post times. Looks like they were still being posted after Id done.
The past week Ive been deleting about 20 each a.m.
Problem with these (and Im sure you get the same with email) is they misspell the 'keyword' so its difficult to filter them all out.
We are lucky that 980 out of 1000 each day do get filtered out.
I try to remember to check it each couple of hours if Im around. You can always email me a warning.