I am telling my experience back in 2017. In 2017 backlinking through forum posting and comment posting is well know and commonly used SEO technique. Now a day I didn’t know if someone is using this technique.

Most of the forum and websites used Akismet as spam protection. Whenever we try to post content with a link (my pure intention was to backlink). Unfortunately Akismet will not allow me to post the link or comment.

SEO Myth: Akismet will not permit any one to post comment or link without the permission of admin. If a link is present Comment will be under review.

SEO Reality: I will post a comment with link to a forum or website (if moderator has no crucial role).  How Its Happens!!!!

I came to notice that Akismet have a loophole, if we are posting a comment with guest website URL along with host website URL, automatically Akismet allow posting that comment.  I think Because of host website URL Akismet gets confused. So it will permit the comment.

Example:

Hi

I have a question about blah.. blah.. blah.. blah… blah.. Host website URL and that blah.. blah.. blah.. blah… blah.. Guest website URL WoW!!! Ho!!.

BingOO!!!

Lots of time i have used this technique!!!