Interestingly, Snopes has a glossary where glurge is defined:
Glurge
Glurge is a term specific to snopes.com, coined in 1998. Already in its short lifespan it has reached across the Internet and has appeared in the print media a number of times, and it may well soon make the final breakthrough by appearing in dictionaries as a bona fide entry. The word was invented by Patricia Chapin, a member of the urban legends discussion mailing list run in conjunction with this site. At a loss for words to describe the retching sensation this then-unnamed category of stories subjected her to, she fashioned a word that simultaneously named the genre and described its effect.
Glurge (a term which can be used to describe one story or applied to the genre as a whole) is the body of inspirational tales which conceal much darker meanings than the uplifting moral lessons they purport to offer, and which undermine their messages by fabricating and distorting historical fact in the guise of offering "true stories." Glurge often contains such heart-tugging elements as sad-eyed puppies, sweet-faced children, angels, dying mothers, or miraculous rescues brought about by prayer. These stories are meant to be parables for modern times but fall far short of the mark. Our Glurge Gallery links to all the glurge any human could stand.
The origins of many glurges are known, often appearing first as fiction in literature designed for ladies of, shall we say?, not too bright intellect (although I don't wish to appear patronising!) Some, often related to prayer, also appear in church magazines. Possibly one of the best known ones is "Something for Stevie" at http://www.snopes.com/glurge/stevie.htm