The Psychology Wiki is a wide-ranging Wikipedia-like resource that is edited by psychology professionals and students. It focuses on the mind and brain and contains a number of fantastic articles.
They’ve just announced their first ‘featured article’, an comprehensive piece on the science of Recovery from Acquired Brain Injury.
The article examines the neuroscience of brain injury and the mechanisms that support subsequent recovery. It also looks at practical steps and the experience of the recovery process.
There’s plenty more fantastic material on the wiki, and if you want to share your knowledge I’m sure they’d be pleased to have you pitch in.