Seeing how there recently is a flood of these posts, all varying in only minute details, it would seem like a word filter on posts by unauthenticated users that include a few keywords could easily get rid of them.
Say more than two of
- browsing
- webmasters
- bloggers
- content
- earnings
in one single post, and not by an authenticated user, hides the post until reviewed by a moderator. Or even outright deletes it.
Maybe a filter is already in place and just needs its word list updated?