Sentence:  you'll have to love U.S. District Court Judge John Kane's decision to keep Denver-based Exactis.com out of an Internet <WSD>black hole</WSD>."..." MAPS maintains a database of Internet addresses that it believes send or relay spam. It's called the "Realtime Blackhole List<!--,-->" 
Meaning of the word marked with <WSD> tags:  A sphere of influence into which or from which communication or similar activity is precluded.