Demaestro - 3:50 pm on Jun 11, 2007 (gmt 0)

A method I like that includes the seeing impaired is a very neat one.

You have a form it contains input boxes.

Let us say you want to have 2 fields.... name and email

So in your form you create 4 text boxes... 2 of them have their visibility set to hidden but are still of type "text" you name these two fields "name" and "email".... then you have the other 2 text boxes set to visible and name them "abc" and "xyz"... when a person comes to the form they will fill out the visible fields "abc" and "xyz" and the "name" and "email" fields will be empty... when a bot fills out the form it will see the non-visible fields as it is looking at source and it will submit the form with values.

If I have a form that is submitted with the "name" and "email" fields then I know it was not a human... of course this doesn't always work but it does help filter out a lot of bots.... again just another way of doing it... this is nice for the seeing impaired problem though.