We've discussed it before, but a site registered in the US that practices deceptive advertising or diverts traffic can have its domain pulled by the FTC. Obviously, this is likely triggered by the level of abuse and the number of complaints received. FTC Shuts Down Thousands of Deceptive Web Sites [dailynews.yahoo.com]
That is a double edged sword. Blaming webmasters for taking advantage of browser functions is nothing the FTC should be involved in. The one that should be shut down, are browser manufactures that put these functions in the browser. It's not a story about back button breaking and multi popups, it's a story about domain name squatting.
How do you view this as an SEO problem? The way I understand the FTC ruling, it was two fold: a) the site was practicing deceptive advertising by cyber squatting trademarked domain names. and b) because it contained popup traps of adult nature.