During July our traffic from Google, which had been growing steadily since we launched YLF in 2005, suddenly dropped more than 50%. To combat this I installed the All in One SEO Pack plugin, removed meta descriptions altogether, and resubmitted the sitemap.

Well, something worked. Our traffic returned to pre-plunge levels a few days ago. Courtesy of Google Webmaster Tools, here is a chart of our traffic from Google over the period.