The 16×16 icon for RSS feeds is pretty much universally recognized by web workers. Many of us are familiar with the little star in the Firefox 3 “awesomebar” for indicating bookmarks as well. Now there’s a new potential addition to the address bar: the Universal Edit Button. The idea is simple: when you visit an editable wiki page in your browser, the button shows up. Click it, and you go into edit view.
The button hasn’t been adopted too widely yet – but two of the places that support it now are the C3 Wiki (the very first one) and Wikipedia. With that kind of support, it’s likely to become a standard sooner rather than later. Currently it’s available as a Firefox add-in, but plans are afoot to extend support to IE as well.