If I sign up with Delphi will I be subjected to all manner of spam, as I have with other discussion groups?

Also I was reading the discussion about parlor guitars... Mister and I were just looking at the book, A History of Guitars in America (or something like that), and amidst all the sweet little narrow-waisted parlor instruments, was a decidedly larger guitar dated 1858 or thereabouts. I thought it quite curious.