First read about this in Boing Boing - this is truly a loss. If you've never heard his stuff...hoo, boy, you are one deprived child.
Now, you're probably wondering "who the heck is Link Wray?" In the spirit of Mike Sterling (who's done this kind of thing before), we're linkblogging.
Link Wray's entry in the Wikipedia
The "only official" Link Wray website
Read his entry as one of Rolling Stone's Top 100 Guitarists
Read about him on the "Rockabilly Hall of Fame"
There's tons more information if you Google his name...but your best bet is to listen for yourself.