Enables you to download extensions from https://chrome.google.com/webstore/ directly to Opera.
To install chrome extensions, click the extension title in detailed view, the download will begin, then you just need to enable it manually as it is from unofficial source.
Some extensions will work, others won't. It is certainly a lot bigger than Opera's default extension repository.
Updated on 28.11.2013 (HTML code of chrome store changed).
To install, drag and drop to Opera, then enable extension.