Maybe we could make /wiki/ show the front page and not just redirect? Then we would have:
http://en.wikipedia.org/wiki/ --> 200 OK http://en.wikipedia.org/wiki/Main_Page --> 200 OK
http://radioscanningtw.jidanni.org/ --> 200 OK http://radioscanningtw.jidanni.org/index.php?title=%E9%A6%96%E9%A0%81 --> 200 OK
http://taizhongbus.jidanni.org/ --> 200 OK http://taizhongbus.jidanni.org/index.php?title=%E9%A6%96%E9%A0%81 --> 200 OK
There's something to be said for making the URLs shorter and prettier, although I also understand the desire to minimize duplication. Thoughts?