I think one potential solution is to not use Facebook and support the smaller startups.

Personally, I prefer spending my time clicking through HN soties rather than the stuff on the news feed.

If only HN also implemented infinite scrolling :)

Is there any criteria on what can be considered as a copycat? If there is, there should be some law or degulation to regilate this. Do we need some jury?

This is really a bad trend. Though people would say that adequate copy with some changes would be micro-innovation, I feel uncomfortable about this.