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.