@Gary: I assume you mean the text of the "Buy" button? I think that makes sense. I think it's also important to reset the status indicator though, so I don't see both "Installing..." and "Install". That might prompt people to think that they don't need to click "Install".
@Gary: I assume you mean the text of the "Buy" button? I think that makes sense. I think it's also important to reset the status indicator though, so I don't see both "Installing..." and "Install". That might prompt people to think that they don't need to click "Install".