Wordpress why marking comments as SPAM, what it do?

[Fli]

What is it good for marking Wordpress comments as SPAM instead of just deleting them please? Which effect it has?

[kumkum]

We can disable Wordpress comments to secure application from SPAM. For that it is must to have Wordpress admin panel.
You can check to disable comments.

[Barton]

So that spammers can no longer comment on you, and if you just delete them, then they will continue to spam, I think