In one embodiment, a first text fragment is made available for copying from a fragment repository. The first text fragment is electronically linked to a second text fragment that is a copy of the first text fragment, the second text fragment included in a container external to the fragment repository. A rating is provided for a derivative of the second fragment created within the container. A third text fragment that is a derivative of the second text fragment is received at the fragment repository. The first and third text fragments are electronically linked, and the third text fragment is made available for copying.