Inspired by Jeff's tweet about crowd sourced documentation I've started a Chrome extension to add data from Stack Overflow to existing online documentation.

It's early days at the moment, but I think it's still useful. The extension currently adds lists of relevant Stack Overflow questions to:

Microsoft's MSDN .NET docs

Microsoft's knowledge base

Oracle's Java docs

The jQuery docs

Python's standard library docs and PEPs

The idea is that, hopefully, the questions that get displayed next to a namespace/class/function will fill in any gaps that are left by the documentation.

I'll be adding more languages and documentation sites over time, as well as opening it up to anyone who wants to add their favourite language or docs site.

You can download the extension from the Chrome webstore.

Here's a couple of screenshots: