The E-learning Lab's Workshop on e-Learning Tools is about Elgg from point 9 onwards, but also encompasses Technorati, tagging and more. It's very clearly presented and may be worth a look as an introductory resource.
They came for the newsroom. It was ready.
"The truth is that prestige journalism is lousy with Bari Weisses, up and down the line. Ask any journalist trying to cover the genocide in Gaza or the social death of gender nonconformists."
"But these questions are framed in this way to encourage us all to aspire towards roles that enable us to do our best work, to have the biggest impact, and to live according to our values."
Things I've learned.