To answer the issue that's been floated: it's an option to delete all a user's posts when banning them for spam, but it's not necessary or automatic. The reality is that 99% of spammers (I made that up, but it's ballpark) come here to spam and that even if their earliest posts aren't spam, they are essentially empty posts as they establish a presence, so no great loss. On the other hand, if a spammer has started a thread to which members have responded in seriousness, there's no reason to delete the whole thing.
I'm going to close this thread; we know they're getting through the safeguards. The issue is being worked on. Apologies for the continued nuisance. If people want to continue to comment, there's a spam thread in the Feedback forum.
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