It's been reported on Site Stuff - both on the "Banner Ad" thread which has tumbleweed with MN ignoring the issues raised and/or gaslighting us as to the new amount of advertising being "normal" on Social Media platforms and in a standalone thread.
MN replied on the standalone thread and asked people to click through to identify its URL. Some brave people have done so: it leads to a fake BBC website and then to a scam investment site.
MN claim to have blocked it and are looking at where it came from - but it would appear unsuccessfully, as it's still popping up.
It's even appeared on the Domestic Abuse topic/threads 
