>>Hi,
>>
>>Usually I find Captcha on various blog sites very difficult to work with. I can't see well the letters or numbers that are shown in the picture; so I keep clicking on "show another." Recently, however, when I was looking at the blog of an asp.net guru his captcha was very easy to go through. The Captcha would ask a questions such as for example:
>>12 - _____ = 7 or
>>Eleven + ___ = Seventeen
>>
>>Basically the math that even I can understand and solve in my head <g>.
>>
>>Does anybody know if this type of Captcha is available and how do you get it?
>
>Should be easy to roll your own. Just randomly generate two numbers within a specified range and check that what the user sends back is the correct value.....

You are right; I thought the same. What I like in that system was that some numbers were shown in numerals and some other in words. And I think .net probably has classes that will translate numbers into words. I just thought that maybe this is a "class library" availalbe already. Naomi sent me links (in Russian) that show how all these Captcha can be cracked. But my site is not a financial or much of a confidential system so it is not that critical.