Hello LMR,
In order to stop the spam which has been affecting the site lately, we are testing a new feature where the first post or comment from a new user will need to be approved by a moderator / administrator before the user can post again.
We also encourage the community to flag any posts suspected as spam at which time admin will review the post and decide if the post is correct, if the user should be warned, the post should be deleted and/or the user should be banned.
We apologize for any inconvenience this may cause, and existing users are not affected. We invite you to give us your feedback in the comments section below, as well as report any issues with the functionality, and thank you for your understanding.