You all might want to take a look at this thread, which focuses Hubble-sharp on fear, rather than disgust, as the core principle of great horror. Some fabulous recommendations too:
http://www.teemingbrain.com/2013/01/...hat-horrifies/
For my money, Charlie Stross's "A Colder War" is the most chilling modern horror story I've read - widely available free on the Web at that. T.E.D. Klein's "The Events at Poroth Farm" runs it a close second.