I also do not understand what the rationale would be to stop this discussion.
The problem of the House Sparrow has been around for a very long time. Here
is a link from my web site which utilizes text from A. C. Bent's Life
Histories of North American Birds. This is part of his contribution for the
House Sparrow.

http://birdcentral.net/naturalhistory5.htm#house

This from an "introduced Italian"

Jim Rosso
Sammamish, Wa
jlrosso at aol.com