Oh they're not suing anyone for a change. I guess they have the means to give some of that money away now.
I still remember them from the times they threatened to sue their fans for not buying their music.
Metallica hadn't sued fans directly, but were making clear their intent to hunt them down. A consulting firm was hired, and complied a list of over 300,000 internet users in a single weekend who were alleged to have downloaded Metallica songs.