Richard A. O'Keefe wrote:
> John Pierce <john.raymond.pierce at gmail.com> wrote:
> 	For instance, as part of the submit process you make your edits to the
> 	swiki, type the letters you see in the image below in the text box
> 	
> 	@@@   @   @   @   @@@
> 	@    @  @@@   @   @   @
> 	@@@   @   @   @   @@@
> 	
> The problem with this is that while I can guess that the first letter is
> "C" and that the last two are "I" and "D", I have no idea what the stuff
> in the middle is.  My eyesight is up to the task of seeing every single
> "@" sign, but if this were real, you'd have just locked me out for no good
> reason.
> 
> A far more reasonable challenge-response hack for a Squeak wiki would be
> to name a method and a line number and ask someone to type the words they
> see in that line.  Or here's another one:  include some kind of text
> scrambler in Squeak.  Present a random sequence of letters and ask for
> the scrambled version.  In either of these approaches, you would have to
> have and be running a copy of Squeak.  You might be an evil spammer, but
> you would _also_ be a Squeak user, and would probably know about anything
> discussed in this list.  I think it's fair to require that people who edit
> the swiki be Squeak users.
> 
> 
> 
This may not work depending on the version of Squeak. How about asking 
some Squeak statement, such as 'abcd' copyFrom:2 to:3, or 1 + 2 * 2 .

Shiro Ogawa