I too was happy that farming was cutting into netters profits but the jury is still out for me whether farming is good or bad in the long run. There are a lot of links out there about Norways severe problem with escaped fish spawning. They've been farming since 1960.

This one is kind of interesting and seemingly non-biased:

http://www.novascotiasalmon.ns.ca/newsandissues/aquaculture.htm