If one insists on this course of action, it might not hurt to throw in a little plausible deniability. Instead of a landing page throwing your tantrum, have th

If one insists on this course of action, it might not hurt to throw in a little plausible deniability. Instead of a landing page throwing your tantrum, have the site mysteriously break and just show a cryptic error message, then just be too busy to fix a problem for a client who hasn't paid anyway. Gently suggest that paying clients come before deadbeats. When the inevitable legal backlash comes, simply shrug and say you were getting around to it and remind everyone that there might be someone in arrears with a large payment or two. Plus interest. And late fee.