Earlier HN submissions based on journalistic reports of same study:
from yesterday:
http://news.ycombinator.com/item?id=3053068
from 105 days ago:
http://news.ycombinator.com/item?id=2664252
In general, press release services are just a guide to look for independent accounts of someone's newly announced study finding. The researcher will always be enthusiastic about his or her new finding, but a good journalist (a rarity, I acknowledge, when it comes to science reporting) will provide perspective and lessen the gee-whiz factor in the researcher's announcement via press release.