Last Thursday our website was down for 1-2 hours. We had to restore it from our local copy which has a slightly different layout (we did some redesign). Basically, we added a small piece of java script to all pages.
Right after that our referrals from google dropped by 20%. I am monitoring our logs every day for the last week and do not see any positive changes.
My questions are: if Google visits the website while the last in unavailable, is it bad? What could cause such sharp discrease in referrals? Our mass update?