Hi, a year ago there was a discussion without conclusions pushed by Guillaume: http://thread.gmane.org/gmane.science.linguistics.wikipedia.technical/56962/
Based on that discussion and the current state of things, I just posted a proposal at http://www.mediawiki.org/wiki/Talk:Social_media
Summary for the lazy email reader: :)
* One and only one @mediawiki account for relevant project news. Sumana and me have access to it. Ideas welcome to improve the current situation.
* Only http://blog.wikimedia.org/c/technology/ and other potential curated sources will be aggregated. The rest will be edited manually.
* Accounts created by MediaWiki Groups will be followed.
* @wikimediatech is fine as a bot driven account. As soon as I find out who has access to that account I will propose a rename to something 'mediawiki' for naming consistency (privately, this is like discussing domain names). Followers will be unaffected.
* And that's it. All the rest is to be cleaned.