Same happened to me - been great for months then last couple of days waves of spam accounts.
i assumed that the robots had got more clever and were able to understand simple questions like
2 + 2 =
and
Type XXXXX here
I initially just replaced the questions with ones very similar just different figures. Seemed to work for a couple of hours then they came again.
So I then replaced the questions with ones that didn't have the answer in them - like
how many fingers on one hand ....
what is the opposite of North ......
What is the talest mountain in the world .........
Since changing these all spam accounts have stopped. Dunno if its coincidence but I'm happy either way
|