Board Thread:The Time Lord Academy/@comment-188432-20140314011829/@comment-188432-20140315142122

I should note here that SOTO was making a logical extrapolation from experience with the DW shard repository we have working internally at Wikia.

That feature is different to Commons sharing, however. If you were to go to w:c:drwho.answers and try to upload a file called Elisabeth Sladen crop.png, you would get a warning that the file already exists. Why does it exist? Because it's here at Tardis. However, drwho.answers users can override our images. It'll just take a bit for the cache to clear and their version of the image to surface.

With this Commons sharing, local is king. There are no warnings that you're using the same filename as a commans file. And local images are immediately viewable.

So the two types of repository are, in fact, quite different.