My proposal: 2 signs "W" formed by both hands make a globe/a ball.
W may stand for: web/world/wiki
In addition, the original Wiki logo contains letters, too...

Happy birthday to Stefan! :-)
I'm back to the List, again (and hopefully for good :-) ), as I'm back to SignWriting. Here in Poland we are implementing a SW project in schools for the deaf :-)

----- Original Message ----- 
  From: Shane K. Gilchrist 
  To: [log in to unmask] 
  Sent: Monday, October 04, 2010 2:38 AM
  Subject: Re: Signwriting: Preparing a sign for a new word - Help needed.

  I saw that used in the Netherlands as well.

  I like that sign too.


  On 2 October 2010 10:33, Sandy Fleming <[log in to unmask]> wrote:

    For "Wikipedia", I'd suggest a sign saying "fitting a jigsaw piece into
    a globe".

    See attached.

    Another way to do it would be to have a sign for "big book opening at
    vertical screen".