Thank you for the suggestions.
We don't use the forum software for our signup process, it's custom.
Gav has a long to-do list. It all helps to make the site more spam proof at the end of the day.
We'll probably do away with the trial bronze memberships. That will stop spammers in their tracks if they can't use any of the site features.
Thanks Oceanrunner.
There are no pop up ads on the www version of LS, other than one asking if you'd like to join. Unless someone clicks on ads, that's it. The mobile site is a little "different", as we have less control on that platform.
I'm hesitant to restrict the Bronze Trial Memberships, for reasons you mention.
I've reported the person to half a dozen site / program owners today. They are spamming an ad network, trying to get the odd cent here and there, for a few clicks. Pretty sad / pathetic state of affairs really.