For bots which are not specifically targeted at your page i simply add an invisible form element named url. Bots _LOVE_ to share their viagra urls. Any request which submitted an url is discarded.
This trick is simple stupid and should not work but somehow the simple spam bots have not improved.
This does not work for sophisticated bots (never met one) or the ones programmed specifically for your site (happens very rarely).
This trick is simple stupid and should not work but somehow the simple spam bots have not improved.
This does not work for sophisticated bots (never met one) or the ones programmed specifically for your site (happens very rarely).