Follower alert no longer works

Friend of mine has been complaining about the follower alert no longer working, and when I went to investigate, the installation steps showed something about Dropbox in addition. Is this new? What’s Dropbox?
If there were any changes, why isn’t there a changelog somewhere telling people they need to do whatever?

The follower alert has been updated abit. There are some small issues currently that are being sorted out.

An announcement has been posted at Regarding Dropbox Errors

You should subscribe to that thread for email updates.