DEPRECATED: it seems grooveshark re-added a clear queue button (on the bottom left)
With the new grooveshark interface, I've seen a couple of person complaining about the “clear queue” button that is not in direct access anymore. That's true that now you have to click twice to clear your songs (Queue > Clear Queue).
One solution would be to install a plugin like greasemonkey and write a proper script.
The simpler solution is to create a “bookmarklet”:
- create a bookmark (e.g., by right clicking in a bookmark toolbar or list),
- put a fancy, preferably short, name like "Z" or "ᚏ" or "♻" (or whatever),
- from now, just click this new bookmark to clear your song queue.