Hi Mariatta, all the other seealso entries (PyGObject, PySide, ...) have references to some specific books and tutorials.  No one has a reference to the wiki, maybe because there is already a reference to it (at the end of the page).  IMHO we can keep the PyQt description consistent with the other GUIs descriptions, and we can fix the broken URL just removing the reference to the outdated book.  What do you think?