smallcompany - 5:46 am on Jul 6, 2007 (gmt 0)

Keywords? Exact, phrase, broad - do you track them separately? Can you run a report that shows conversion for each keyword? What was your average position while your conversion was 1 opposing to when it was 2? CTR, total number of impressions, daily, weekly? Compare all of that.

If this does not help, how about competition? Did something new kicked into the market which is more attractive or same thing but cheaper, better? When you type your best keyword into Google Search, is the situation the same like two or three weeks ago? New ads?

If none of those applies, keep in mind that two weeks is not enough to get worried. You may say that you’ve never had that before, no matter about the time of the year, but it happens sometimes, with no reason known to you.