(I moved the spam post to the Trash and Norbert's post to this new topic.)
Norbert wrote: ↑October 6th, 2017, 8:24 pm
Unless you ban these by IP address, they'll keep coming.
The problem with banning by IP address is that each account uses a different IP address.
Even the first octets are different. (45 vs. 144 vs. 117)
The only common thing among the last few spammer accounts (pamipexray1979, kshuasha1979, sampriti2013) is their naming scheme,
and that the whois results of their IP addresses mention
West Bengal.
Norbert wrote: ↑October 6th, 2017, 8:24 pm
Maybe make signing up more difficult?
Maybe.
With the current rate of one spam post per month, it's not really urgent.
Looks like the current "Who originally created Prince of Persia?" question is too easy for some bots.
Then again, maybe humans are registering the accounts? Or humans help the bots with such questions?