There's been a rash of AI (presumably) spam bots that are creating new accounts, posting vague messages that when read are often meaningless. They usually contain a link to some external website.

I might be wrong, but I believe this is a strategy for increasing the sites relevance in search engines due to increased back links.

As an example, there are five new accounts posting to this thread:
https://www.sweethome3d.com/support/for ... 4380#68295

None of them are "real" comments, and they all have a link off to some other site.

New users messages should be held for review by a human until it is obvious they are actually human - there are few enough new accounts that this shouldn't be a large task.

Please do something to block this annoyance.