Photo by Michael Stipe, from paulwilliams.comThe health of Crawdaddy magazine founder Paul Williams (not the Muppets-identified '70s singer-songwriter) has been in decline since a bicycle accident in 1995 caused serious brain damage. In an entry today on the Web site Boing Boing, author Jonathan Lethem tells readers that Williams, 60, now requires full-time care -- a huge financial liability on top of the devastating emotional effects his family already feels.The tone and style of pop-music cove