lgn1 - 9:11 pm on Dec 10, 2013 (gmt 0)
I gave up on SEO long ago. I have much better control using adwords, and we keep our listing above the fold using automated rules. Our costs go up and down, depending on how many competitors are competing with us, but month over month and year over year, costs and profit margin average out.
I can sleep better knowing that I can't be wiped out by a serp algorithm change.