Connecting with the four-year old PBS TV show, a revamped Artists Den Web site continues to put aficionados in intimate settings with interesting artists — or at least those who thrive in somewhat of a low-key, somewhat unplugged-like atmosphere. The revamped Web site continues to offer up a cool place for artists such as Death Cab for Cutie, Elvis Costello, Adele, The Fray, David Gray, Ben Harper and Ringo Starr. All that is good enough to attract national sponsorship partners like Grey Goose and Southwest.