 |
 |
We use a combination of a CSS-hidden field and a block list of known spammer IP addresses on all of our public web forms. This combo has reduced our spam load by some 95% since instituted (we used to average several hundred spam submissions a week). The block list does have to be maintained by regular review of our submission logs but, since the majority of spam hitting our forms is robot-generated, I only spend about 10 minutes every morning reviewing the logs and only find myself adding new IPs to the block list 4-5 times a week. I did test the hidden field in JAWS with no problems, but be advised that some mobile devices (in particular, some older Blackberry devices) will display the hidden form field. I circumvented that issue by adding an exception for mobile submissions, as I've yet to encounter any spam originating from mobile devices. -- Mark Vega University of California, Irvine Libraries