According to this article here at Read Write Web, collaborative efforts of 20 wiki providers has lead to a new add-on for Firefox. This new button, which will be located near the auto discovery RSS feed detector will indicate any time a web page is able to be publicly edited.
The groups hopes for this new add-on is that it:
"will be a convenience to web surfers who are already inclined to contribute, and an invitation to those who have yet to discover the thrill of building a common resource."
If wiki editors were able to work together to come up with this tool, imagine the power it will be able to give the users who constantly create content on websites. It will be easy to detect where they can give input, leading to more collaboration throughout the World Wide Web.