An auto messaging. bitcointalk Bot which could automatically update a thread by copying and posting messages from Twitter , Facebook and Slack.
I saw there is some bumping bots. but that will only send bump messages.
Speaking Technically, it isn't all that different from posting a "bump" message.The same coder can easily change the source of the message from simple text to the data that comes off the sites you have mentioned.Not a very difficult job I suppose.
The main problem starts if your bot account starts spamming or disobeying any forum's rules.
You are 100% incorrect about difficulty of this job. That bot loads updates from fb, twitter and slack you need to use 3 different API's from it. Also bot should gets notifications from server about new post not just scrap it. There are 3 functions needed which will connect to their api's, load message and post it on bitcointalk. It is not easy task and require some good skills in web coding.
They would just use the pushes to get the info. As soon as a new update is posted on FB or whatever, it would alert the script and the script would run through and do whatever it needs to do. That tech has been out for almost a decade.