Sandro Tosi writes to complain about Debian/Ubuntu members using their Ubuntu email address for Debian packages. zack responds, wondering what's wrong with that.
I generally agree with Zack. However, back when Jon Corbet was producing summaries of kernel contributors (here's one for 2.6.23: Who wrote 2.6.23), I thought it was a shame that the many Debian contributors who work on the kernel were not represented. I suspect most Debian kernel hackers are paid to work on the kernel, and sign off their patches with an address at their employer's domain.