My experiment has concluded and all the link removals reverted*. The full writeup is at http://www.gwern.net/In%20Defense%20Of%20Inclusionism#sins-of-omission-exper...
Result: Of the 100 removals, just 3 were reverted.
3% is even lower than I expected, and very different from Horologium's estimate, incidentally.
* for those who wish to check, feel free to cross-reference the list of diffs http://www.gwern.net/In%20Defense%20Of%20Inclusionism#link-removals against my recent edits: http://en.wikipedia.org/w/index.php?title=Special:Contributions/Gwern&of...