I'm not sure if this has been mentioned already.  Apologies if it has.  But I saw this on WARD Silver's contest update from the league and thought it worth posting here since it's been discussed lately.

Incidentally, if you're a league member, you might want to sign up for the contest update which is emailed directly to you every so often.  I'm not a contester at all but I've found Ward's newsletters to be extremely useful with lots of information that's relevant to all hams, not just contesters.  I'm not sure this link will survive the listserv software intact but here goes:

http://www.w8ji.com/second_floor_grounding.htm