Here’s a cool post in IJNet about what makes a story in line with public interest:
Journalists should always apply the public interest test before deciding whether to cover a story. For most issues it’s fairly clear what is and what is not in the public interest; for some it’s more complicated, particularly where privacy is concerned.
The first task, however, is to separate what is in the public interest from those things members of the public are interested in; they are not necessarily the same. The fact that the public may be interested in something has nothing to do with whether it is in the public interest.
My only beef here is that, in the next paragraph, it actually quotes Wikipedia as a source.