New users posting spam with links in Collective discussions - Meta Stack Overflow

I have noticed a huge influx in spam posts, especially in the discussion section of the PHP collective. Most follow a similar format, with big headers at the top and then a link at the bottom. They

Possible spam notification even when there are no links in post

Can't post question on Stack Overflow - 'this looks like spam

Growth Marketing Blog from Iterable

Moderation Strike: Stack Overflow, Inc. cannot consistently ignore

Are any Stack Exchange sites likely to eventually become bigger

GitHub - samliew/SO-mod-userscripts: Stack Overflow Moderation

Newest 'script' Questions - Stack Apps

Building a full-stack spam catching app, by Matt Sosna

Tips for Preventing Spam - admins - Discourse Meta

GreyNoise Intelligence

Getting Stack Overflow like Title field on other Stack Exchange

Building a full-stack spam catching app, by Matt Sosna

Moderation Strike: Stack Overflow, Inc. cannot consistently ignore