I am convinced this is already happening. One example is the endless new accounts posting ibtimes links.
There are also propoganda websites posted regularly by new accounts (especially sowing disinformation about Russia’s war on Ukraine).
Basically be wary of anything posted where it’s their first post. Often they make accounts and don’t use them for months so they look older.
I also think astroturfing is happening but at lower rate than reddit.
Like you, I have no idea how we can counter this at scale.
It might help if a poster’s number of posts and signup date were listed at the top of each post or comment. Would’t be a fix but might help weed out upsprouting autotrolls.
There are a lot of subreddits which routinely award hundreds or thousands of upvotes for repetitive low value posts. … This is a cog in the well-tuned machine of new-accounts being created and matured to look ‘real’ for when they are later used for advertising / manipulation later down the line.
In the early months of a new account, it is easier to spot. Eg. If you see a post on a game subreddit with a title like “Exciting to try this game, any tips get started?”, you might click the profile and see that their entire history is a bunch of low-effort discussion starters. “Name a band from the 80s that everyone has forgotten”; “What’s the most misunderstood concept in maths?”; “What’s the most underrated (movie / band / drug / car / tourist attraction / whatever suits the topic of the subreddit)?”
A heap of threads like that, on a new account with a very generic name (adjective-noun-numbers is a common pattern); posting on a variety of subredits… is highly suspicious. But it gets harder to recognise as the account gets older and has a longer history - at which point it is ready to be sold / used for its next purpose.
