"The Safari Reader – which debuted yesterday with version
5 of the Apple browser — is built using the source code for
Readability, an Apache project from Arc90 Labs. In the wake of the
browser's release, Arc90 praised Apple for including a tool that
mimics its own — a tool that strips a webpage of its ads and
site branding, reducing to text and core images — and only
later did the outfit realize that Steve Jobs and cult had actually
dipped into its code.
"The Apache 2 license does not require code contributions back
to the community.
"Apple does include a nod to Readability in its Safari
acknowledgments (Help > Acknowledgments), but true to form, it
never said a word to Arc90 — or anyone else. The likes of
TechCrunch are still under the impression that Apple built Reader
on its own."