[enitihas]

Now, he shows up at number 4 in the Github contributor list (https://github.com/ariya/phantomjs/graphs/contributors) with 179,603 lines added, not a single one of which seems to be a meaningful contribution by him.

Are such incidences common in other open source software too, or does this one seem a rare case?

[micimize]

I doubt it, but the line count / commit frequency heuristics really shouldn't be taken too seriously anyways