From @wikipedia, RT by @wikimedia and @mediawiki, using this image -
https://commons.wikimedia.org/wiki/File:Wikimedia_HHVM_deployment_-_Average_... :
How we made editing Wikipedia twice as fast, using @HipHopVM https://blog.wikimedia.org/2014/12/29/how-we-made-editing-wikipedia-twice-as... #MediaWiki #PHP
If someone else could come up with a draft for FB/G+, that would be great.