Hi all,
the first phase of Wikidata will help to centralize many of the Wikipedia language links. We did a small analysis to figure out the possible impact of this step.
Here are a few highlights: * there are more than 240 million language links in the Wikipedias * they are responsible for about 5 GB of wikitext * on average, 33% of a Wikipedia language edition's wikitext is due to language links - in several Wikipedias, more than 75% of the wikitext are just language links!
The full data set is available here: http://simia.net/languagelinks/
It would be interesting to also figure out how many of the edits are due to changes to the language links. If anyone wants to try that...?
Enjoy the data, Denny