I tried searching the web, but didn't find any solution that would work with Wordpress 3.1. I want to completely remove the "Website" field from comments. How to do it?
That didn't work, but I found the solution: http://wordpress.org/support/topic/disable-url-for-comment-author The second part did the trick:
Go to comments.php template and find the related code( something as blogurl) and comment or remove it...
It really depends on the structure of your theme. Sometimes you can edit it on your wp-admin>appearance>editor>comments.php Or you can go to your file manager (or ftp), then on the directory where your wordpress is installed look for wp-comments.php or comments.php (not sure what's the file name), then look for the website field )