If it will not be deleted from the posts with quotes we have another one problem: if someone will help a spammer with quotation it could stay. Don't quote spammers!
Unfortunately, creating a post that counts for a signature payment is more important to many members. They're literally helping spammers this way. What they should have done, is Report the post.
Yes, that's right, you should just report the post, because it violates the forum rules